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5212016521 = 19619443161
BaseRepresentation
bin1001101101010100…
…10000111110001001
3111110020022212112221
410312222100332021
541133234012041
62221103334041
7243105260305
oct46652207611
914406285487
105212016521
112235058178
1210155b1321
13650a6255a
143762d0d05
152078862d1
hex136a90f89

5212016521 has 8 divisors (see below), whose sum is σ = 5495208800. Its totient is φ = 4929711840.

The previous prime is 5212016501. The next prime is 5212016527. The reversal of 5212016521 is 1256102125.

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 5212016521 - 215 = 5211983753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5212016527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209820 + ... + 233341.

It is an arithmetic number, because the mean of its divisors is an integer number (686901100).

Almost surely, 25212016521 is an apocalyptic number.

It is an amenable number.

5212016521 is a deficient number, since it is larger than the sum of its proper divisors (283192279).

5212016521 is a wasteful number, since it uses less digits than its factorization.

5212016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443799.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5212016521 is about 72194.2970116061. The cubic root of 5212016521 is about 1733.8116943475.

Adding to 5212016521 its reverse (1256102125), we get a palindrome (6468118646).

The spelling of 5212016521 in words is "five billion, two hundred twelve million, sixteen thousand, five hundred twenty-one".

Divisors: 1 19 619 11761 443161 8420059 274316659 5212016521