57851240 has 16 divisors (see below), whose sum is σ = 130165380. Its totient is φ = 23140480.

The previous prime is 57851231. The next prime is 57851251. The reversal of 57851240 is 4215875.

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 4 = 7606^2 + 2^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57851197 and 57851206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723101 + ... + 723180.

Almost surely, 2^57851240 is an apocalyptic number.

It is an amenable number.

57851240 is an abundant number, since it is smaller than the sum of its proper divisors (72314140).

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

57851240 is a wasteful number, since it uses less digits than its factorization.

57851240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446292 (or 1446288 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 57851240 is about 7606.0002629503. Note that the first 3 decimals coincide. The cubic root of 57851240 is about 386.7564430199.

The spelling of 57851240 in words is "fifty-seven million, eight hundred fifty-one thousand, two hundred forty".