57455661 has 8 divisors (see below), whose sum is σ = 76685440. Its totient is φ = 38264832.

The previous prime is 57455647. The next prime is 57455693. The reversal of 57455661 is 16655475.

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

It is not a de Polignac number, because 57455661 - 2⁹ = 57455149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57455621) 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, 6100 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (9585680).

Almost surely, 2^57455661 is an apocalyptic number.

It is an amenable number.

57455661 is a deficient number, since it is larger than the sum of its proper divisors (19229779).

57455661 is a wasteful number, since it uses less digits than its factorization.

57455661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19475.

The product of its digits is 126000, while the sum is 39.

The square root of 57455661 is about 7579.9512531414. The cubic root of 57455661 is about 385.8728965749.

The spelling of 57455661 in words is "fifty-seven million, four hundred fifty-five thousand, six hundred sixty-one".