52991290 has 32 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 19195200.

The previous prime is 52991273. The next prime is 52991299. The reversal of 52991290 is 9219925.

It is not an unprimeable number, because it can be changed into a prime (52991299) 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, 33436 + ... + 34984.

It is an arithmetic number, because the mean of its divisors is an integer number (3264300).

Almost surely, 2^52991290 is an apocalyptic number.

52991290 is a deficient number, since it is larger than the sum of its proper divisors (51466310).

52991290 is a wasteful number, since it uses less digits than its factorization.

52991290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 52991290 is about 7279.5116594453. The cubic root of 52991290 is about 375.6079974087.

It can be divided in two parts, 529 and 91290, that added together give a palindrome (91819).

The spelling of 52991290 in words is "fifty-two million, nine hundred ninety-one thousand, two hundred ninety".