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5142865253 = 25120489503
BaseRepresentation
bin1001100101000100…
…11110010101100101
3111021102012121211212
410302202132111211
541013033142003
62210153241205
7241305430151
oct46242362545
914242177755
105142865253
1121aa016869
12bb6403205
1363c630146
1436b050061
15201776dd8
hex13289e565

5142865253 has 4 divisors (see below), whose sum is σ = 5163355008. Its totient is φ = 5122375500.

The previous prime is 5142865243. The next prime is 5142865291. The reversal of 5142865253 is 3525682415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3525682415 = 5705136483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-5142865253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5142865253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5142865243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10244501 + ... + 10245002.

It is an arithmetic number, because the mean of its divisors is an integer number (1290838752).

Almost surely, 25142865253 is an apocalyptic number.

It is an amenable number.

5142865253 is a deficient number, since it is larger than the sum of its proper divisors (20489755).

5142865253 is a wasteful number, since it uses less digits than its factorization.

5142865253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20489754.

The product of its digits is 288000, while the sum is 41.

The square root of 5142865253 is about 71713.7731053108. The cubic root of 5142865253 is about 1726.1096553357.

The spelling of 5142865253 in words is "five billion, one hundred forty-two million, eight hundred sixty-five thousand, two hundred fifty-three".

Divisors: 1 251 20489503 5142865253