51054275391 has 16 divisors (see below), whose sum is σ = 77804894208. Its totient is φ = 29170908000.

The previous prime is 51054275387. The next prime is 51054275399. The reversal of 51054275391 is 19357245015.

It is a happy number.

It is not a de Polignac number, because 51054275391 - 2² = 51054275387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51054275399) 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, 97341 + ... + 334041.

It is an arithmetic number, because the mean of its divisors is an integer number (4862805888).

Almost surely, 2^51054275391 is an apocalyptic number.

51054275391 is a deficient number, since it is larger than the sum of its proper divisors (26750618817).

51054275391 is a wasteful number, since it uses less digits than its factorization.

51054275391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246982.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 51054275391 in words is "fifty-one billion, fifty-four million, two hundred seventy-five thousand, three hundred ninety-one".