55857358 has 4 divisors (see below), whose sum is σ = 83786040. Its totient is φ = 27928678.

The previous prime is 55857341. The next prime is 55857367. The reversal of 55857358 is 85375855.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13964338 + ... + 13964341.

It is an arithmetic number, because the mean of its divisors is an integer number (20946510).

Almost surely, 2^55857358 is an apocalyptic number.

55857358 is a deficient number, since it is larger than the sum of its proper divisors (27928682).

55857358 is a wasteful number, since it uses less digits than its factorization.

55857358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27928681.

The product of its digits is 840000, while the sum is 46.

The square root of 55857358 is about 7473.7780272095. The cubic root of 55857358 is about 382.2611218685.

The spelling of 55857358 in words is "fifty-five million, eight hundred fifty-seven thousand, three hundred fifty-eight".