55350857 has 12 divisors (see below), whose sum is σ = 60918480. Its totient is φ = 50148648.

The previous prime is 55350839. The next prime is 55350859. The reversal of 55350857 is 75805355.

It is a de Polignac number, because none of the positive numbers 2^k-55350857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55350857.

It is not an unprimeable number, because it can be changed into a prime (55350859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7298 + ... + 12804.

It is an arithmetic number, because the mean of its divisors is an integer number (5076540).

Almost surely, 2^55350857 is an apocalyptic number.

It is an amenable number.

55350857 is a deficient number, since it is larger than the sum of its proper divisors (5567623).

55350857 is a wasteful number, since it uses less digits than its factorization.

55350857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572 (or 5549 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 38.

The square root of 55350857 is about 7439.8156563184. The cubic root of 55350857 is about 381.1021947165.

The spelling of 55350857 in words is "fifty-five million, three hundred fifty thousand, eight hundred fifty-seven".