52918921 has 8 divisors (see below), whose sum is σ = 57986784. Its totient is φ = 47893920.

The previous prime is 52918919. The next prime is 52918937. The reversal of 52918921 is 12981925.

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 52918921 - 2¹ = 52918919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52918951) 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, 8100 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (7248348).

Almost surely, 2^52918921 is an apocalyptic number.

It is an amenable number.

52918921 is a deficient number, since it is larger than the sum of its proper divisors (5067863).

52918921 is a wasteful number, since it uses less digits than its factorization.

52918921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431.

The product of its digits is 12960, while the sum is 37.

The square root of 52918921 is about 7274.5392293945. The cubic root of 52918921 is about 375.4369330779.

The spelling of 52918921 in words is "fifty-two million, nine hundred eighteen thousand, nine hundred twenty-one".