57149994 has 48 divisors (see below), whose sum is σ = 126556416. Its totient is φ = 17191680.

The previous prime is 57149987. The next prime is 57149999. The reversal of 57149994 is 49994175.

It is a super-2 number, since 2×57149994² = 6532243628400072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57149999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161722 + ... + 162074.

It is an arithmetic number, because the mean of its divisors is an integer number (2636592).

Almost surely, 2^57149994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57149994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63278208).

57149994 is an abundant number, since it is smaller than the sum of its proper divisors (69406422).

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

57149994 is a wasteful number, since it uses less digits than its factorization.

57149994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 592 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 57149994 is about 7559.7615041746. The cubic root of 57149994 is about 385.1873917689.

It can be divided in two parts, 57 and 149994, that added together give a palindrome (150051).

The spelling of 57149994 in words is "fifty-seven million, one hundred forty-nine thousand, nine hundred ninety-four".