521151131051 has 16 divisors (see below), whose sum is σ = 526299316224. Its totient is φ = 516020549184.

The previous prime is 521151131041. The next prime is 521151131071. The reversal of 521151131051 is 150131151125.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 521151131051 - 2³⁴ = 503971261867 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 521151131051.

It is not an unprimeable number, because it can be changed into a prime (521151131041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218694206 + ... + 218696588.

It is an arithmetic number, because the mean of its divisors is an integer number (32893707264).

Almost surely, 2^521151131051 is an apocalyptic number.

521151131051 is a deficient number, since it is larger than the sum of its proper divisors (5148185173).

521151131051 is a wasteful number, since it uses less digits than its factorization.

521151131051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 521151131051 its reverse (150131151125), we get a palindrome (671282282176).

The spelling of 521151131051 in words is "five hundred twenty-one billion, one hundred fifty-one million, one hundred thirty-one thousand, fifty-one".