51531703 has 6 divisors (see below), whose sum is σ = 53248632. Its totient is φ = 49868460.

The previous prime is 51531679. The next prime is 51531731. The reversal of 51531703 is 30713515.

It is not a de Polignac number, because 51531703 - 2⁹ = 51531191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51535703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25851 + ... + 27772.

It is an arithmetic number, because the mean of its divisors is an integer number (8874772).

Almost surely, 2^51531703 is an apocalyptic number.

51531703 is a deficient number, since it is larger than the sum of its proper divisors (1716929).

51531703 is an equidigital number, since it uses as much as digits as its factorization.

51531703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53685 (or 53654 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 51531703 is about 7178.5585600453. The cubic root of 51531703 is about 372.1272712669.

The spelling of 51531703 in words is "fifty-one million, five hundred thirty-one thousand, seven hundred three".