51493534 has 16 divisors (see below), whose sum is σ = 81492480. Its totient is φ = 24335640.

The previous prime is 51493487. The next prime is 51493549. The reversal of 51493534 is 43539415.

It is a self number, because there is not a number n which added to its sum of digits gives 51493534.

It is a congruent number.

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, 18579 + ... + 21169.

It is an arithmetic number, because the mean of its divisors is an integer number (5093280).

Almost surely, 2^51493534 is an apocalyptic number.

51493534 is a deficient number, since it is larger than the sum of its proper divisors (29998946).

51493534 is a wasteful number, since it uses less digits than its factorization.

51493534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135.

The product of its digits is 32400, while the sum is 34.

The square root of 51493534 is about 7175.8995254950. The cubic root of 51493534 is about 372.0353716318.

The spelling of 51493534 in words is "fifty-one million, four hundred ninety-three thousand, five hundred thirty-four".