53809057 has 4 divisors (see below), whose sum is σ = 53934336. Its totient is φ = 53683780.

The previous prime is 53809043. The next prime is 53809061. The reversal of 53809057 is 75090835.

53809057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 53809057 - 2⁷ = 53808929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53809037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61993 + ... + 62854.

It is an arithmetic number, because the mean of its divisors is an integer number (13483584).

Almost surely, 2^53809057 is an apocalyptic number.

It is an amenable number.

53809057 is a deficient number, since it is larger than the sum of its proper divisors (125279).

53809057 is a wasteful number, since it uses less digits than its factorization.

53809057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125278.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 53809057 is about 7335.4656975546. The cubic root of 53809057 is about 377.5302830844.

The spelling of 53809057 in words is "fifty-three million, eight hundred nine thousand, fifty-seven".