57225557 has 4 divisors (see below), whose sum is σ = 57255360. Its totient is φ = 57195756.

The previous prime is 57225533. The next prime is 57225563. The reversal of 57225557 is 75552275.

57225557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57225557 - 2¹⁶ = 57160021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57225557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57225577) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11807 + ... + 15932.

It is an arithmetic number, because the mean of its divisors is an integer number (14313840).

Almost surely, 2^57225557 is an apocalyptic number.

It is an amenable number.

57225557 is a deficient number, since it is larger than the sum of its proper divisors (29803).

57225557 is a wasteful number, since it uses less digits than its factorization.

57225557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29802.

The product of its digits is 122500, while the sum is 38.

The square root of 57225557 is about 7564.7575638615. The cubic root of 57225557 is about 385.3570803050.

The spelling of 57225557 in words is "fifty-seven million, two hundred twenty-five thousand, five hundred fifty-seven".