57049140 has 24 divisors (see below), whose sum is σ = 159737760. Its totient is φ = 15213088.

The previous prime is 57049133. The next prime is 57049141. The reversal of 57049140 is 4194075.

It is a happy number.

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 = 57049098 and 57049107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57049141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475350 + ... + 475469.

It is an arithmetic number, because the mean of its divisors is an integer number (6655740).

Almost surely, 2^57049140 is an apocalyptic number.

It is an amenable number.

57049140 is an abundant number, since it is smaller than the sum of its proper divisors (102688620).

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

57049140 is a wasteful number, since it uses less digits than its factorization.

57049140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950831 (or 950829 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 57049140 is about 7553.0881101706. The cubic root of 57049140 is about 384.9606751311.

The spelling of 57049140 in words is "fifty-seven million, forty-nine thousand, one hundred forty".