51530344 has 32 divisors (see below), whose sum is σ = 100219680. Its totient is φ = 24819264.

The previous prime is 51530329. The next prime is 51530351. The reversal of 51530344 is 44303515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30859 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (3131865).

Almost surely, 2^51530344 is an apocalyptic number.

It is an amenable number.

51530344 is a deficient number, since it is larger than the sum of its proper divisors (48689336).

51530344 is a wasteful number, since it uses less digits than its factorization.

51530344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 51530344 is about 7178.4639025351. The cubic root of 51530344 is about 372.1239999771.

Adding to 51530344 its reverse (44303515), we get a palindrome (95833859).

The spelling of 51530344 in words is "fifty-one million, five hundred thirty thousand, three hundred forty-four".