51552015451 has 4 divisors (see below), whose sum is σ = 51922893400. Its totient is φ = 51181137504.

The previous prime is 51552015413. The next prime is 51552015467. The reversal of 51552015451 is 15451025515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15451025515 = 5 ⋅3090205103.

It is a cyclic number.

It is not a de Polignac number, because 51552015451 - 2⁷ = 51552015323 is a prime.

It is a super-2 number, since 2×51552015451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51552015491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185438766 + ... + 185439043.

It is an arithmetic number, because the mean of its divisors is an integer number (12980723350).

Almost surely, 2^51552015451 is an apocalyptic number.

51552015451 is a deficient number, since it is larger than the sum of its proper divisors (370877949).

51552015451 is a wasteful number, since it uses less digits than its factorization.

51552015451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370877948.

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 51552015451 in words is "fifty-one billion, five hundred fifty-two million, fifteen thousand, four hundred fifty-one".