51090406 has 32 divisors (see below), whose sum is σ = 85847040. Its totient is φ = 22678656.

The previous prime is 51090379. The next prime is 51090419. The reversal of 51090406 is 60409015.

It is a super-2 number, since 2×51090406² = 5220459170489672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61365 + ... + 62191.

It is an arithmetic number, because the mean of its divisors is an integer number (2682720).

Almost surely, 2^51090406 is an apocalyptic number.

51090406 is a deficient number, since it is larger than the sum of its proper divisors (34756634).

51090406 is a wasteful number, since it uses less digits than its factorization.

51090406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51090406 is about 7147.7553119843. The cubic root of 51090406 is about 371.0619745689.

The spelling of 51090406 in words is "fifty-one million, ninety thousand, four hundred six".