51494655 has 32 divisors (see below), whose sum is σ = 87171840. Its totient is φ = 25885440.

The previous prime is 51494629. The next prime is 51494671. The reversal of 51494655 is 55649415.

It is not a de Polignac number, because 51494655 - 2⁵ = 51494623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79764 + ... + 80406.

It is an arithmetic number, because the mean of its divisors is an integer number (2724120).

Almost surely, 2^51494655 is an apocalyptic number.

51494655 is a deficient number, since it is larger than the sum of its proper divisors (35677185).

51494655 is a wasteful number, since it uses less digits than its factorization.

51494655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its digits is 108000, while the sum is 39.

The square root of 51494655 is about 7175.9776337444. The cubic root of 51494655 is about 372.0380713146.

The spelling of 51494655 in words is "fifty-one million, four hundred ninety-four thousand, six hundred fifty-five".