52001657 has 4 divisors (see below), whose sum is σ = 55060596. Its totient is φ = 48942720.

The previous prime is 52001647. The next prime is 52001659. The reversal of 52001657 is 75610025.

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 40819321 + 11182336 = 6389^2 + 3344^2 .

It is a cyclic number.

It is not a de Polignac number, because 52001657 - 2⁴ = 52001641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52001659) 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, 1529444 + ... + 1529477.

It is an arithmetic number, because the mean of its divisors is an integer number (13765149).

Almost surely, 2^52001657 is an apocalyptic number.

It is an amenable number.

52001657 is a deficient number, since it is larger than the sum of its proper divisors (3058939).

52001657 is a wasteful number, since it uses less digits than its factorization.

52001657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058938.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 52001657 is about 7211.2174422909. The cubic root of 52001657 is about 373.2550802364.

The spelling of 52001657 in words is "fifty-two million, one thousand, six hundred fifty-seven".