52786921 has 32 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 42036480.

The previous prime is 52786897. The next prime is 52786927. The reversal of 52786921 is 12968725.

It is a cyclic number.

It is not a de Polignac number, because 52786921 - 2⁵ = 52786889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52786927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294810 + ... + 294988.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^52786921 is an apocalyptic number.

It is an amenable number.

52786921 is a deficient number, since it is larger than the sum of its proper divisors (12531479).

52786921 is a wasteful number, since it uses less digits than its factorization.

52786921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309.

The product of its digits is 60480, while the sum is 40.

The square root of 52786921 is about 7265.4608250269. The cubic root of 52786921 is about 375.1245121348.

The spelling of 52786921 in words is "fifty-two million, seven hundred eighty-six thousand, nine hundred twenty-one".