55776607 has 4 divisors (see below), whose sum is σ = 56482720. Its totient is φ = 55070496.

The previous prime is 55776601. The next prime is 55776613. The reversal of 55776607 is 70667755.

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

It is an interprime number because it is at equal distance from previous prime (55776601) and next prime (55776613).

It is a cyclic number.

It is not a de Polignac number, because 55776607 - 2¹⁵ = 55743839 is a prime.

It is a super-2 number, since 2×55776607² = 6222059776864898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55776601) 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, 352938 + ... + 353095.

It is an arithmetic number, because the mean of its divisors is an integer number (14120680).

Almost surely, 2^55776607 is an apocalyptic number.

55776607 is a deficient number, since it is larger than the sum of its proper divisors (706113).

55776607 is an equidigital number, since it uses as much as digits as its factorization.

55776607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706112.

The product of its (nonzero) digits is 308700, while the sum is 43.

The square root of 55776607 is about 7468.3737855038. The cubic root of 55776607 is about 382.0768259176.

The spelling of 55776607 in words is "fifty-five million, seven hundred seventy-six thousand, six hundred seven".