52597981 has 8 divisors (see below), whose sum is σ = 53296064. Its totient is φ = 51904800.

The previous prime is 52597973. The next prime is 52597991. The reversal of 52597981 is 18979525.

52597981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52597981 - 2³ = 52597973 is a prime.

It is a super-2 number, since 2×52597981² = 5533095210552722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52597931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23545 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (6662008).

Almost surely, 2^52597981 is an apocalyptic number.

It is an amenable number.

52597981 is a deficient number, since it is larger than the sum of its proper divisors (698083).

52597981 is a wasteful number, since it uses less digits than its factorization.

52597981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its digits is 226800, while the sum is 46.

The square root of 52597981 is about 7252.4465527158. The cubic root of 52597981 is about 374.6764165674.

The spelling of 52597981 in words is "fifty-two million, five hundred ninety-seven thousand, nine hundred eighty-one".