55927999 has 4 divisors (see below), whose sum is σ = 57732160. Its totient is φ = 54123840.

The previous prime is 55927987. The next prime is 55928003. The reversal of 55927999 is 99972955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99972955 = 5 ⋅19994591.

It is a cyclic number.

It is not a de Polignac number, because 55927999 - 2¹¹ = 55925951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55927919) 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, 902034 + ... + 902095.

It is an arithmetic number, because the mean of its divisors is an integer number (14433040).

Almost surely, 2^55927999 is an apocalyptic number.

55927999 is a deficient number, since it is larger than the sum of its proper divisors (1804161).

55927999 is a wasteful number, since it uses less digits than its factorization.

55927999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804160.

The product of its digits is 2296350, while the sum is 55.

The square root of 55927999 is about 7478.5024570431. The cubic root of 55927999 is about 382.4221984241.

The spelling of 55927999 in words is "fifty-five million, nine hundred twenty-seven thousand, nine hundred ninety-nine".