51493516 has 12 divisors (see below), whose sum is σ = 91591360. Its totient is φ = 25324560.

The previous prime is 51493487. The next prime is 51493549. The reversal of 51493516 is 61539415.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105276 + ... + 105763.

Almost surely, 2^51493516 is an apocalyptic number.

It is an amenable number.

51493516 is a deficient number, since it is larger than the sum of its proper divisors (40097844).

51493516 is a wasteful number, since it uses less digits than its factorization.

51493516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211104 (or 211102 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 51493516 is about 7175.8982712968. The cubic root of 51493516 is about 372.0353282824.

The spelling of 51493516 in words is "fifty-one million, four hundred ninety-three thousand, five hundred sixteen".