51368554 has 8 divisors (see below), whose sum is σ = 78506820. Its totient is φ = 25199616.

The previous prime is 51368549. The next prime is 51368587. The reversal of 51368554 is 45586315.

It can be written as a sum of positive squares in 2 ways, for example, as 51337225 + 31329 = 7165^2 + 177^2 .

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, 242199 + ... + 242410.

Almost surely, 2^51368554 is an apocalyptic number.

51368554 is a deficient number, since it is larger than the sum of its proper divisors (27138266).

51368554 is a wasteful number, since it uses less digits than its factorization.

51368554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484664.

The product of its digits is 72000, while the sum is 37.

The square root of 51368554 is about 7167.1859191736. The cubic root of 51368554 is about 371.7341386707.

The spelling of 51368554 in words is "fifty-one million, three hundred sixty-eight thousand, five hundred fifty-four".