51090590 has 32 divisors (see below), whose sum is σ = 96546816. Its totient is φ = 19428640.

The previous prime is 51090553. The next prime is 51090607. The reversal of 51090590 is 9509015.

51090590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51090590² = 5220496773096200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43349 + ... + 44511.

It is an arithmetic number, because the mean of its divisors is an integer number (3017088).

Almost surely, 2^51090590 is an apocalyptic number.

51090590 is a deficient number, since it is larger than the sum of its proper divisors (45456226).

51090590 is a wasteful number, since it uses less digits than its factorization.

51090590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 51090590 is about 7147.7681831464. The cubic root of 51090590 is about 371.0624200232.

The spelling of 51090590 in words is "fifty-one million, ninety thousand, five hundred ninety".