51525045551 has 8 divisors (see below), whose sum is σ = 59315590560. Its totient is φ = 43841956608.

The previous prime is 51525045521. The next prime is 51525045581. The reversal of 51525045551 is 15554052515.

It is an interprime number because it is at equal distance from previous prime (51525045521) and next prime (51525045581).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51525045551 - 2³⁴ = 34345176367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51525045521) 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 7 ways as a sum of consecutive naturals, for example, 26862986 + ... + 26864903.

It is an arithmetic number, because the mean of its divisors is an integer number (7414448820).

Almost surely, 2^51525045551 is an apocalyptic number.

51525045551 is a deficient number, since it is larger than the sum of its proper divisors (7790545009).

51525045551 is a wasteful number, since it uses less digits than its factorization.

51525045551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53728033.

The product of its (nonzero) digits is 125000, while the sum is 38.

The spelling of 51525045551 in words is "fifty-one billion, five hundred twenty-five million, forty-five thousand, five hundred fifty-one".