15530455251 has 6 divisors (see below), whose sum is σ = 22432879820. Its totient is φ = 10353636828.

The previous prime is 15530455181. The next prime is 15530455261. The reversal of 15530455251 is 15255403551.

15530455251 is a `hidden beast` number, since 1 + 5 + 53 + 0 + 4 + 552 + 51 = 666.

It is not a de Polignac number, because 15530455251 - 2²² = 15526260947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15530455261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 862803061 + ... + 862803078.

Almost surely, 2^15530455251 is an apocalyptic number.

15530455251 is a deficient number, since it is larger than the sum of its proper divisors (6902424569).

15530455251 is a wasteful number, since it uses less digits than its factorization.

15530455251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725606145 (or 1725606142 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 15530455251 in words is "fifteen billion, five hundred thirty million, four hundred fifty-five thousand, two hundred fifty-one".