52051557 has 4 divisors (see below), whose sum is σ = 69402080. Its totient is φ = 34701036.

The previous prime is 52051523. The next prime is 52051567. The reversal of 52051557 is 75515025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52051557 - 2⁸ = 52051301 is a prime.

It is a super-2 number, since 2×52051557² = 5418729172248498, 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 (52051567) 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, 8675257 + ... + 8675262.

It is an arithmetic number, because the mean of its divisors is an integer number (17350520).

Almost surely, 2^52051557 is an apocalyptic number.

It is an amenable number.

52051557 is a deficient number, since it is larger than the sum of its proper divisors (17350523).

52051557 is a wasteful number, since it uses less digits than its factorization.

52051557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17350522.

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 52051557 is about 7214.6765000241. The cubic root of 52051557 is about 373.3744320365.

The spelling of 52051557 in words is "fifty-two million, fifty-one thousand, five hundred fifty-seven".