52993989 has 6 divisors (see below), whose sum is σ = 76546886. Its totient is φ = 35329320.

The previous prime is 52993979. The next prime is 52994003. The reversal of 52993989 is 98939925.

52993989 is a `hidden beast` number, since 529 + 9 + 39 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35605089 + 17388900 = 5967^2 + 4170^2 .

It is not a de Polignac number, because 52993989 - 2¹⁶ = 52928453 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 (52993979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2944102 + ... + 2944119.

Almost surely, 2^52993989 is an apocalyptic number.

It is an amenable number.

52993989 is a deficient number, since it is larger than the sum of its proper divisors (23552897).

52993989 is a wasteful number, since it uses less digits than its factorization.

52993989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888227 (or 5888224 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 52993989 is about 7279.6970403994. The cubic root of 52993989 is about 375.6143742351.

The spelling of 52993989 in words is "fifty-two million, nine hundred ninety-three thousand, nine hundred eighty-nine".