51413574031 has 4 divisors (see below), whose sum is σ = 52284990600. Its totient is φ = 50542157464.

The previous prime is 51413574029. The next prime is 51413574049. The reversal of 51413574031 is 13047531415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51413574031 - 2¹ = 51413574029 is a prime.

It is a super-2 number, since 2×51413574031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51413574631) 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, 435708196 + ... + 435708313.

It is an arithmetic number, because the mean of its divisors is an integer number (13071247650).

Almost surely, 2^51413574031 is an apocalyptic number.

51413574031 is a deficient number, since it is larger than the sum of its proper divisors (871416569).

51413574031 is an equidigital number, since it uses as much as digits as its factorization.

51413574031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871416568.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 51413574031 in words is "fifty-one billion, four hundred thirteen million, five hundred seventy-four thousand, thirty-one".