57353820 has 48 divisors (see below), whose sum is σ = 161336448. Its totient is φ = 15223360.

The previous prime is 57353783. The next prime is 57353833. The reversal of 57353820 is 2835375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11515 + ... + 15725.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^57353820 is an apocalyptic number.

It is an amenable number.

57353820 is an abundant number, since it is smaller than the sum of its proper divisors (103982628).

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

57353820 is a wasteful number, since it uses less digits than its factorization.

57353820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450 (or 4448 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 57353820 is about 7573.2304863909. The cubic root of 57353820 is about 385.6447732857.

The spelling of 57353820 in words is "fifty-seven million, three hundred fifty-three thousand, eight hundred twenty".