57109404 has 48 divisors (see below), whose sum is σ = 147853440. Its totient is φ = 17010240.

The previous prime is 57109387. The next prime is 57109427. The reversal of 57109404 is 40490175.

It is a happy number.

It is a super-2 number, since 2×57109404² = 6522968050470432, which contains 22 as substring.

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, 4122 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (3080280).

Almost surely, 2^57109404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57109404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73926720).

57109404 is an abundant number, since it is smaller than the sum of its proper divisors (90744036).

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

57109404 is a wasteful number, since it uses less digits than its factorization.

57109404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410 (or 7408 counting only the distinct ones).

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

The square root of 57109404 is about 7557.0764188276. The cubic root of 57109404 is about 385.0961788159.

Adding to 57109404 its reverse (40490175), we get a palindrome (97599579).

The spelling of 57109404 in words is "fifty-seven million, one hundred nine thousand, four hundred four".