51590390 has 8 divisors (see below), whose sum is σ = 92862720. Its totient is φ = 20636152.

The previous prime is 51590387. The next prime is 51590401. The reversal of 51590390 is 9309515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 2579510 + ... + 2579529.

It is an arithmetic number, because the mean of its divisors is an integer number (11607840).

Almost surely, 2^51590390 is an apocalyptic number.

51590390 is a deficient number, since it is larger than the sum of its proper divisors (41272330).

51590390 is a wasteful number, since it uses less digits than its factorization.

51590390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159046.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 51590390 is about 7182.6450559665. The cubic root of 51590390 is about 372.2684836770.

The spelling of 51590390 in words is "fifty-one million, five hundred ninety thousand, three hundred ninety".