51255455215 has 16 divisors (see below), whose sum is σ = 62264434176. Its totient is φ = 40499373600.

The previous prime is 51255455213. The next prime is 51255455221.

It is a happy number.

51255455215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51255455215 - 2¹ = 51255455213 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 (51255455213) 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, 1741270 + ... + 1770460.

It is an arithmetic number, because the mean of its divisors is an integer number (3891527136).

Almost surely, 2^51255455215 is an apocalyptic number.

51255455215 is a deficient number, since it is larger than the sum of its proper divisors (11008978961).

51255455215 is a wasteful number, since it uses less digits than its factorization.

51255455215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33510.

The product of its digits is 250000, while the sum is 40.

The spelling of 51255455215 in words is "fifty-one billion, two hundred fifty-five million, four hundred fifty-five thousand, two hundred fifteen".