52931021 has 8 divisors (see below), whose sum is σ = 62184864. Its totient is φ = 44417520.

The previous prime is 52930991. The next prime is 52931023. The reversal of 52931021 is 12013925.

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

It is a cyclic number.

It is not a de Polignac number, because 52931021 - 2²² = 48736717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52931023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184931 + ... + 185216.

It is an arithmetic number, because the mean of its divisors is an integer number (7773108).

Almost surely, 2^52931021 is an apocalyptic number.

It is an amenable number.

52931021 is a deficient number, since it is larger than the sum of its proper divisors (9253843).

52931021 is a wasteful number, since it uses less digits than its factorization.

52931021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370171.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 52931021 is about 7275.3708496543. The cubic root of 52931021 is about 375.4655456587.

Adding to 52931021 its reverse (12013925), we get a palindrome (64944946).

The spelling of 52931021 in words is "fifty-two million, nine hundred thirty-one thousand, twenty-one".