51534530 has 16 divisors (see below), whose sum is σ = 93320640. Its totient is φ = 20489712.

The previous prime is 51534523. The next prime is 51534541. The reversal of 51534530 is 3543515.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51534530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13760 + ... + 17099.

It is an arithmetic number, because the mean of its divisors is an integer number (5832540).

Almost surely, 2^51534530 is an apocalyptic number.

51534530 is a deficient number, since it is larger than the sum of its proper divisors (41786110).

51534530 is a wasteful number, since it uses less digits than its factorization.

51534530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31033.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 51534530 is about 7178.7554631705. The cubic root of 51534530 is about 372.1340760395.

The spelling of 51534530 in words is "fifty-one million, five hundred thirty-four thousand, five hundred thirty".