15531152051 has 4 divisors (see below), whose sum is σ = 15532651992. Its totient is φ = 15529652112.

The previous prime is 15531152041. The next prime is 15531152059. The reversal of 15531152051 is 15025113551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15025113551 = 7 ⋅2146444793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15531152051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15531152059) 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, 734330 + ... + 755183.

It is an arithmetic number, because the mean of its divisors is an integer number (3883162998).

Almost surely, 2^15531152051 is an apocalyptic number.

15531152051 is a deficient number, since it is larger than the sum of its proper divisors (1499941).

15531152051 is a wasteful number, since it uses less digits than its factorization.

15531152051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499940.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 15531152051 in words is "fifteen billion, five hundred thirty-one million, one hundred fifty-two thousand, fifty-one".