55707857 has 8 divisors (see below), whose sum is σ = 56681856. Its totient is φ = 54741232.

The previous prime is 55707809. The next prime is 55707893. The reversal of 55707857 is 75870755.

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 55707857 - 2¹² = 55703761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55706857) 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, 14648 + ... + 18054.

It is an arithmetic number, because the mean of its divisors is an integer number (7085232).

Almost surely, 2^55707857 is an apocalyptic number.

It is an amenable number.

55707857 is a deficient number, since it is larger than the sum of its proper divisors (973999).

55707857 is a wasteful number, since it uses less digits than its factorization.

55707857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687.

The product of its (nonzero) digits is 343000, while the sum is 44.

The square root of 55707857 is about 7463.7696239903. The cubic root of 55707857 is about 381.9197793043.

The spelling of 55707857 in words is "fifty-five million, seven hundred seven thousand, eight hundred fifty-seven".