52757993 has 4 divisors (see below), whose sum is σ = 52924740. Its totient is φ = 52591248.

The previous prime is 52757963. The next prime is 52758007. The reversal of 52757993 is 39975725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 33327529 = 4408^2 + 5773^2 .

It is a cyclic number.

It is not a de Polignac number, because 52757993 - 2¹⁴ = 52741609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52757963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82898 + ... + 83531.

It is an arithmetic number, because the mean of its divisors is an integer number (13231185).

Almost surely, 2^52757993 is an apocalyptic number.

It is an amenable number.

52757993 is a deficient number, since it is larger than the sum of its proper divisors (166747).

52757993 is a wasteful number, since it uses less digits than its factorization.

52757993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166746.

The product of its digits is 595350, while the sum is 47.

The square root of 52757993 is about 7263.4697631366. The cubic root of 52757993 is about 375.0559750518.

The spelling of 52757993 in words is "fifty-two million, seven hundred fifty-seven thousand, nine hundred ninety-three".