57251545 has 8 divisors (see below), whose sum is σ = 73986696. Its totient is φ = 42278016.

The previous prime is 57251521. The next prime is 57251561. The reversal of 57251545 is 54515275.

It can be written as a sum of positive squares in 4 ways, for example, as 1121481 + 56130064 = 1059^2 + 7492^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57251545 - 2¹⁹ = 56727257 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 57251545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440332 + ... + 440461.

It is an arithmetic number, because the mean of its divisors is an integer number (9248337).

Almost surely, 2^57251545 is an apocalyptic number.

It is an amenable number.

57251545 is a deficient number, since it is larger than the sum of its proper divisors (16735151).

57251545 is a wasteful number, since it uses less digits than its factorization.

57251545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880811.

The product of its digits is 35000, while the sum is 34.

The square root of 57251545 is about 7566.4750709957. The cubic root of 57251545 is about 385.4154059012.

The spelling of 57251545 in words is "fifty-seven million, two hundred fifty-one thousand, five hundred forty-five".