51525156233 has 4 divisors (see below), whose sum is σ = 51525622020. Its totient is φ = 51524690448.

The previous prime is 51525156211. The next prime is 51525156253. The reversal of 51525156233 is 33265152515.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 30322301689 + 21202854544 = 174133^2 + 145612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51525156233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51525156253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38303 + ... + 323291.

It is an arithmetic number, because the mean of its divisors is an integer number (12881405505).

Almost surely, 2^51525156233 is an apocalyptic number.

It is an amenable number.

51525156233 is a deficient number, since it is larger than the sum of its proper divisors (465787).

51525156233 is a wasteful number, since it uses less digits than its factorization.

51525156233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465786.

The product of its digits is 135000, while the sum is 38.

The spelling of 51525156233 in words is "fifty-one billion, five hundred twenty-five million, one hundred fifty-six thousand, two hundred thirty-three".