55912499 has 4 divisors (see below), whose sum is σ = 57716160. Its totient is φ = 54108840.

The previous prime is 55912481. The next prime is 55912501. The reversal of 55912499 is 99421955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99421955 = 5 ⋅19884391.

It is a cyclic number.

It is not a de Polignac number, because 55912499 - 2¹⁶ = 55846963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55912799) 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, 901784 + ... + 901845.

It is an arithmetic number, because the mean of its divisors is an integer number (14429040).

Almost surely, 2^55912499 is an apocalyptic number.

55912499 is a deficient number, since it is larger than the sum of its proper divisors (1803661).

55912499 is a wasteful number, since it uses less digits than its factorization.

55912499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803660.

The product of its digits is 145800, while the sum is 44.

The square root of 55912499 is about 7477.4660815011. The cubic root of 55912499 is about 382.3868667366.

The spelling of 55912499 in words is "fifty-five million, nine hundred twelve thousand, four hundred ninety-nine".