52921693 has 16 divisors (see below), whose sum is σ = 59496192. Its totient is φ = 46656000.

The previous prime is 52921667. The next prime is 52921711. The reversal of 52921693 is 39612925.

It is a cyclic number.

It is not a de Polignac number, because 52921693 - 2⁹ = 52921181 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 (52921633) 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, 122005 + ... + 122437.

It is an arithmetic number, because the mean of its divisors is an integer number (3718512).

Almost surely, 2^52921693 is an apocalyptic number.

It is an amenable number.

52921693 is a deficient number, since it is larger than the sum of its proper divisors (6574499).

52921693 is a wasteful number, since it uses less digits than its factorization.

52921693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its digits is 29160, while the sum is 37.

The square root of 52921693 is about 7274.7297544307. The cubic root of 52921693 is about 375.4434883452.

It can be divided in two parts, 529 and 21693, that added together give a palindrome (22222).

The spelling of 52921693 in words is "fifty-two million, nine hundred twenty-one thousand, six hundred ninety-three".