57061771 has 4 divisors (see below), whose sum is σ = 61451152. Its totient is φ = 52672392.

The previous prime is 57061759. The next prime is 57061789. The reversal of 57061771 is 17716075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57061771 - 2²¹ = 54964619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57061751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194671 + ... + 2194696.

It is an arithmetic number, because the mean of its divisors is an integer number (15362788).

Almost surely, 2^57061771 is an apocalyptic number.

57061771 is a deficient number, since it is larger than the sum of its proper divisors (4389381).

57061771 is a wasteful number, since it uses less digits than its factorization.

57061771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389380.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 57061771 is about 7553.9242119576. The cubic root of 57061771 is about 384.9890838531.

The spelling of 57061771 in words is "fifty-seven million, sixty-one thousand, seven hundred seventy-one".