52390190 has 32 divisors (see below), whose sum is σ = 96624576. Its totient is φ = 20446720.

The previous prime is 52390189. The next prime is 52390213. The reversal of 52390190 is 9109325.

It is a super-2 number, since 2×52390190² = 5489464016472200, which contains 22 as substring.

It is a Curzon number.

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, 79904 + ... + 80556.

It is an arithmetic number, because the mean of its divisors is an integer number (3019518).

Almost surely, 2^52390190 is an apocalyptic number.

52390190 is a deficient number, since it is larger than the sum of its proper divisors (44234386).

52390190 is a wasteful number, since it uses less digits than its factorization.

52390190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 52390190 is about 7238.1067966700. The cubic root of 52390190 is about 374.1823726645.

The spelling of 52390190 in words is "fifty-two million, three hundred ninety thousand, one hundred ninety".