55707799 has 4 divisors (see below), whose sum is σ = 63666064. Its totient is φ = 47749536.

The previous prime is 55707787. The next prime is 55707803. The reversal of 55707799 is 99770755.

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

It is a cyclic number.

It is not a de Polignac number, because 55707799 - 2⁵ = 55707767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55707709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979122 + ... + 3979135.

It is an arithmetic number, because the mean of its divisors is an integer number (15916516).

Almost surely, 2^55707799 is an apocalyptic number.

55707799 is a deficient number, since it is larger than the sum of its proper divisors (7958265).

55707799 is an equidigital number, since it uses as much as digits as its factorization.

55707799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958264.

The product of its (nonzero) digits is 694575, while the sum is 49.

The square root of 55707799 is about 7463.7657385532. The cubic root of 55707799 is about 381.9196467595.

The spelling of 55707799 in words is "fifty-five million, seven hundred seven thousand, seven hundred ninety-nine".