57225745 has 8 divisors (see below), whose sum is σ = 68714280. Its totient is φ = 45751680.

The previous prime is 57225737. The next prime is 57225767. The reversal of 57225745 is 54752275.

It can be written as a sum of positive squares in 4 ways, for example, as 13242321 + 43983424 = 3639^2 + 6632^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57225745 - 2³ = 57225737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9261 + ... + 14149.

It is an arithmetic number, because the mean of its divisors is an integer number (8589285).

Almost surely, 2^57225745 is an apocalyptic number.

It is an amenable number.

57225745 is a deficient number, since it is larger than the sum of its proper divisors (11488535).

57225745 is a wasteful number, since it uses less digits than its factorization.

57225745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235.

The product of its digits is 98000, while the sum is 37.

The square root of 57225745 is about 7564.7699898939. The cubic root of 57225745 is about 385.3575023021.

It can be divided in two parts, 57225 and 745, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 57225745 in words is "fifty-seven million, two hundred twenty-five thousand, seven hundred forty-five".