57229809 has 32 divisors (see below), whose sum is σ = 96225024. Its totient is φ = 29445120.

The previous prime is 57229801. The next prime is 57229817. The reversal of 57229809 is 90892275.

57229809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57229801) and next prime (57229817).

It is not a de Polignac number, because 57229809 - 2³ = 57229801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57229801) 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 31 ways as a sum of consecutive naturals, for example, 8637 + ... + 13749.

It is an arithmetic number, because the mean of its divisors is an integer number (3007032).

Almost surely, 2^57229809 is an apocalyptic number.

It is an amenable number.

57229809 is a deficient number, since it is larger than the sum of its proper divisors (38995215).

57229809 is a wasteful number, since it uses less digits than its factorization.

57229809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 57229809 is about 7565.0385987118. The cubic root of 57229809 is about 385.3666243958.

It can be divided in two parts, 572 and 29809, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 57229809 in words is "fifty-seven million, two hundred twenty-nine thousand, eight hundred nine".