55207655 has 4 divisors (see below), whose sum is σ = 66249192. Its totient is φ = 44166120.

The previous prime is 55207639. The next prime is 55207681. The reversal of 55207655 is 55670255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55670255 = 5 ⋅11134051.

It is not a de Polignac number, because 55207655 - 2⁴ = 55207639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5520761 + ... + 5520770.

It is an arithmetic number, because the mean of its divisors is an integer number (16562298).

Almost surely, 2^55207655 is an apocalyptic number.

55207655 is a deficient number, since it is larger than the sum of its proper divisors (11041537).

55207655 is a wasteful number, since it uses less digits than its factorization.

55207655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041536.

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 55207655 is about 7430.1853947260. The cubic root of 55207655 is about 380.7732523310.

Subtracting from 55207655 its product of nonzero digits (52500), we obtain a palindrome (55155155).

The spelling of 55207655 in words is "fifty-five million, two hundred seven thousand, six hundred fifty-five".