55857115 has 8 divisors (see below), whose sum is σ = 67248720. Its totient is φ = 44538912.

The previous prime is 55857107. The next prime is 55857157. The reversal of 55857115 is 51175855.

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 55857115 - 2³ = 55857107 is a prime.

It is a super-2 number, since 2×55857115² = 6240034592246450, which contains 22 as substring.

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, 16660 + ... + 19729.

It is an arithmetic number, because the mean of its divisors is an integer number (8406090).

Almost surely, 2^55857115 is an apocalyptic number.

55857115 is a deficient number, since it is larger than the sum of its proper divisors (11391605).

55857115 is a wasteful number, since it uses less digits than its factorization.

55857115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36701.

The product of its digits is 35000, while the sum is 37.

The square root of 55857115 is about 7473.7617703537. The cubic root of 55857115 is about 382.2605675423.

The spelling of 55857115 in words is "fifty-five million, eight hundred fifty-seven thousand, one hundred fifteen".