55793857 has 4 divisors (see below), whose sum is σ = 63764416. Its totient is φ = 47823300.

The previous prime is 55793851. The next prime is 55793869. The reversal of 55793857 is 75839755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55793857 - 2³ = 55793849 is a prime.

It is a super-2 number, since 2×55793857² = 6225908957872898, which contains 22 as substring.

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 55793857.

It is not an unprimeable number, because it can be changed into a prime (55793851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3985269 + ... + 3985282.

It is an arithmetic number, because the mean of its divisors is an integer number (15941104).

Almost surely, 2^55793857 is an apocalyptic number.

It is an amenable number.

55793857 is a deficient number, since it is larger than the sum of its proper divisors (7970559).

55793857 is an equidigital number, since it uses as much as digits as its factorization.

55793857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970558.

The product of its digits is 1323000, while the sum is 49.

The square root of 55793857 is about 7469.5285661145. The cubic root of 55793857 is about 382.1162100864.

The spelling of 55793857 in words is "fifty-five million, seven hundred ninety-three thousand, eight hundred fifty-seven".