57071304 has 80 divisors (see below), whose sum is σ = 165419100. Its totient is φ = 18361728.

The previous prime is 57071293. The next prime is 57071359. The reversal of 57071304 is 40317075.

It can be written as a sum of positive squares in 2 ways, for example, as 54730404 + 2340900 = 7398^2 + 1530^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17274 + ... + 20310.

Almost surely, 2^57071304 is an apocalyptic number.

57071304 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57071304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82709550).

57071304 is an abundant number, since it is smaller than the sum of its proper divisors (108347796).

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

57071304 is a wasteful number, since it uses less digits than its factorization.

57071304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084 (or 3071 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57071304 is about 7554.5551821401. Note that the first 3 decimals coincide. The cubic root of 57071304 is about 385.0105220040.

Adding to 57071304 its reverse (40317075), we get a palindrome (97388379).

It can be divided in two parts, 57071 and 304, that added together give a palindrome (57375).

The spelling of 57071304 in words is "fifty-seven million, seventy-one thousand, three hundred four".