57053561 has 8 divisors (see below), whose sum is σ = 61453920. Its totient is φ = 52792992.

The previous prime is 57053533. The next prime is 57053567. The reversal of 57053561 is 16535075.

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

It is not a de Polignac number, because 57053561 - 2¹⁸ = 56791417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57053567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34100 + ... + 35733.

It is an arithmetic number, because the mean of its divisors is an integer number (7681740).

Almost surely, 2^57053561 is an apocalyptic number.

It is an amenable number.

57053561 is a deficient number, since it is larger than the sum of its proper divisors (4400359).

57053561 is a wasteful number, since it uses less digits than its factorization.

57053561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69895.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 57053561 is about 7553.3807662529. The cubic root of 57053561 is about 384.9706189981.

The spelling of 57053561 in words is "fifty-seven million, fifty-three thousand, five hundred sixty-one".