57225700 has 72 divisors (see below), whose sum is σ = 146865600. Its totient is φ = 18936960.

The previous prime is 57225683. The next prime is 57225719. The reversal of 57225700 is 752275.

57225700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18891 + ... + 21709.

It is an arithmetic number, because the mean of its divisors is an integer number (2039800).

Almost surely, 2^57225700 is an apocalyptic number.

57225700 is a gapful number since it is divisible by the number (50) 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 57225700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73432800).

57225700 is an abundant number, since it is smaller than the sum of its proper divisors (89639900).

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

57225700 is a wasteful number, since it uses less digits than its factorization.

57225700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869 (or 2862 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 57225700 is about 7564.7670155795. The cubic root of 57225700 is about 385.3574012923.

Adding to 57225700 its reverse (752275), we get a palindrome (57977975).

The spelling of 57225700 in words is "fifty-seven million, two hundred twenty-five thousand, seven hundred".