57158040 has 32 divisors (see below), whose sum is σ = 171474480. Its totient is φ = 15242112.

The previous prime is 57158027. The next prime is 57158047. The reversal of 57158040 is 4085175.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 57157989 and 57158007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57158047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238039 + ... + 238278.

Almost surely, 2^57158040 is an apocalyptic number.

It is an amenable number.

57158040 is an abundant number, since it is smaller than the sum of its proper divisors (114316440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57158040 is a wasteful number, since it uses less digits than its factorization.

57158040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476331 (or 476327 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 57158040 is about 7560.2936450908. The cubic root of 57158040 is about 385.2054674332.

The spelling of 57158040 in words is "fifty-seven million, one hundred fifty-eight thousand, forty".