51493522 has 8 divisors (see below), whose sum is σ = 77460156. Its totient is φ = 25673472.

The previous prime is 51493487. The next prime is 51493549. The reversal of 51493522 is 22539415.

It can be written as a sum of positive squares in 2 ways, for example, as 48177481 + 3316041 = 6941^2 + 1821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 35763 + ... + 37174.

Almost surely, 2^51493522 is an apocalyptic number.

51493522 is a deficient number, since it is larger than the sum of its proper divisors (25966634).

51493522 is a wasteful number, since it uses less digits than its factorization.

51493522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73292.

The product of its digits is 10800, while the sum is 31.

The square root of 51493522 is about 7175.8986893629. The cubic root of 51493522 is about 372.0353427322.

The spelling of 51493522 in words is "fifty-one million, four hundred ninety-three thousand, five hundred twenty-two".