51255354431 has 8 divisors (see below), whose sum is σ = 51566838528. Its totient is φ = 50944320000.

The previous prime is 51255354373. The next prime is 51255354443. The reversal of 51255354431 is 13445355215.

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 51255354431 - 2³⁴ = 34075485247 is a prime.

It is a super-3 number, since 3×51255354431³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255354481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117671 + ... + 341111.

It is an arithmetic number, because the mean of its divisors is an integer number (6445854816).

Almost surely, 2^51255354431 is an apocalyptic number.

51255354431 is a deficient number, since it is larger than the sum of its proper divisors (311484097).

51255354431 is a wasteful number, since it uses less digits than its factorization.

51255354431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224833.

The product of its digits is 180000, while the sum is 38.

The spelling of 51255354431 in words is "fifty-one billion, two hundred fifty-five million, three hundred fifty-four thousand, four hundred thirty-one".