52390090 has 32 divisors (see below), whose sum is σ = 104198400. Its totient is φ = 18864384.

The previous prime is 52390081. The next prime is 52390097. The reversal of 52390090 is 9009325.

It is not an unprimeable number, because it can be changed into a prime (52390097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (3256200).

Almost surely, 2^52390090 is an apocalyptic number.

52390090 is a deficient number, since it is larger than the sum of its proper divisors (51808310).

52390090 is a wasteful number, since it uses less digits than its factorization.

52390090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13446.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 52390090 is about 7238.0998887830. The cubic root of 52390090 is about 374.1821345903.

The spelling of 52390090 in words is "fifty-two million, three hundred ninety thousand, ninety".