51374531 has 4 divisors (see below), whose sum is σ = 55326432. Its totient is φ = 47422632.

The previous prime is 51374513. The next prime is 51374549. The reversal of 51374531 is 13547315.

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

It is an interprime number because it is at equal distance from previous prime (51374513) and next prime (51374549).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51374531 is a prime.

It is a super-2 number, since 2×51374531² = 5278684870939922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51374494 and 51374503.

It is not an unprimeable number, because it can be changed into a prime (51374591) 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, 1975931 + ... + 1975956.

It is an arithmetic number, because the mean of its divisors is an integer number (13831608).

Almost surely, 2^51374531 is an apocalyptic number.

51374531 is a deficient number, since it is larger than the sum of its proper divisors (3951901).

51374531 is a wasteful number, since it uses less digits than its factorization.

51374531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951900.

The product of its digits is 6300, while the sum is 29.

The square root of 51374531 is about 7167.6028768341. The cubic root of 51374531 is about 371.7485558488.

The spelling of 51374531 in words is "fifty-one million, three hundred seventy-four thousand, five hundred thirty-one".