51731351 has 8 divisors (see below), whose sum is σ = 59359104. Its totient is φ = 44163000.

The previous prime is 51731341. The next prime is 51731353. The reversal of 51731351 is 15313715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51731351 - 2¹⁴ = 51714967 is a prime.

It is a super-2 number, since 2×51731351² = 5352265352570402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51731351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51731353) 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, 12965 + ... + 16478.

It is an arithmetic number, because the mean of its divisors is an integer number (7419888).

Almost surely, 2^51731351 is an apocalyptic number.

51731351 is a deficient number, since it is larger than the sum of its proper divisors (7627753).

51731351 is a wasteful number, since it uses less digits than its factorization.

51731351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29701.

The product of its digits is 1575, while the sum is 26.

The square root of 51731351 is about 7192.4509730689. The cubic root of 51731351 is about 372.6072264620.

The spelling of 51731351 in words is "fifty-one million, seven hundred thirty-one thousand, three hundred fifty-one".