52691057 has 4 divisors (see below), whose sum is σ = 54508020. Its totient is φ = 50874096.

The previous prime is 52691053. The next prime is 52691059. The reversal of 52691057 is 75019625.

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 16679056 + 36012001 = 4084^2 + 6001^2 .

It is a cyclic number.

It is not a de Polignac number, because 52691057 - 2² = 52691053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52691053) 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, 908438 + ... + 908495.

It is an arithmetic number, because the mean of its divisors is an integer number (13627005).

Almost surely, 2^52691057 is an apocalyptic number.

It is an amenable number.

52691057 is a deficient number, since it is larger than the sum of its proper divisors (1816963).

52691057 is a wasteful number, since it uses less digits than its factorization.

52691057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816962.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 52691057 is about 7258.8605855189. The cubic root of 52691057 is about 374.8972921685.

The spelling of 52691057 in words is "fifty-two million, six hundred ninety-one thousand, fifty-seven".