57120445 has 16 divisors (see below), whose sum is σ = 71009280. Its totient is φ = 44064000.

The previous prime is 57120439. The next prime is 57120509. The reversal of 57120445 is 54402175.

It is not a de Polignac number, because 57120445 - 2¹⁹ = 56596157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61696 + ... + 62614.

It is an arithmetic number, because the mean of its divisors is an integer number (4438080).

Almost surely, 2^57120445 is an apocalyptic number.

It is an amenable number.

57120445 is a deficient number, since it is larger than the sum of its proper divisors (13888835).

57120445 is a wasteful number, since it uses less digits than its factorization.

57120445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 57120445 is about 7557.8068908910. The cubic root of 57120445 is about 385.1209941856.

It can be divided in two parts, 57 and 120445, that multiplied together give a triangular number (6865365 = T₃₇₀₅).

The spelling of 57120445 in words is "fifty-seven million, one hundred twenty thousand, four hundred forty-five".