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5215252531 = 71179410359
BaseRepresentation
bin1001101101101101…
…00111000000110011
3111110110102021112011
410312312213000303
541140101040111
62221300543351
7243144625606
oct46666470063
914413367464
105215252531
112236968465
1210166b1b57
13651626458
143768d433d
15207cc5021
hex136da7033

5215252531 has 8 divisors (see below), whose sum is σ = 5318265600. Its totient is φ = 5113060680.

The previous prime is 5215252529. The next prime is 5215252577. The reversal of 5215252531 is 1352525125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5215252531 - 21 = 5215252529 is a prime.

It is a super-2 number, since 2×52152525312 = 54397717924203811922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5215252493 and 5215252502.

It is not an unprimeable number, because it can be changed into a prime (5215252331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192471 + ... + 217888.

It is an arithmetic number, because the mean of its divisors is an integer number (664783200).

Almost surely, 25215252531 is an apocalyptic number.

5215252531 is a deficient number, since it is larger than the sum of its proper divisors (103013069).

5215252531 is a wasteful number, since it uses less digits than its factorization.

5215252531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410609.

The product of its digits is 15000, while the sum is 31.

The square root of 5215252531 is about 72216.7053457855. The cubic root of 5215252531 is about 1734.1704468056.

Adding to 5215252531 its reverse (1352525125), we get a palindrome (6567777656).

The spelling of 5215252531 in words is "five billion, two hundred fifteen million, two hundred fifty-two thousand, five hundred thirty-one".

Divisors: 1 71 179 12709 410359 29135489 73454261 5215252531