51442746 has 16 divisors (see below), whose sum is σ = 104188800. Its totient is φ = 16930368.

The previous prime is 51442739. The next prime is 51442759. The reversal of 51442746 is 64724415.

It is a super-2 number, since 2×51442746² = 5292712232041032, which contains 22 as substring.

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, 53791 + ... + 54738.

It is an arithmetic number, because the mean of its divisors is an integer number (6511800).

Almost surely, 2^51442746 is an apocalyptic number.

51442746 is an abundant number, since it is smaller than the sum of its proper divisors (52746054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51442746 is a wasteful number, since it uses less digits than its factorization.

51442746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108613.

The product of its digits is 26880, while the sum is 33.

The square root of 51442746 is about 7172.3598626951. The cubic root of 51442746 is about 371.9130187432.

The spelling of 51442746 in words is "fifty-one million, four hundred forty-two thousand, seven hundred forty-six".