55622665 has 8 divisors (see below), whose sum is σ = 76282560. Its totient is φ = 38141232.

The previous prime is 55622647. The next prime is 55622681. The reversal of 55622665 is 56622655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55622665 - 2¹³ = 55614473 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 794575 + ... + 794644.

It is an arithmetic number, because the mean of its divisors is an integer number (9535320).

Almost surely, 2^55622665 is an apocalyptic number.

It is an amenable number.

55622665 is a deficient number, since it is larger than the sum of its proper divisors (20659895).

55622665 is a wasteful number, since it uses less digits than its factorization.

55622665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589231.

The product of its digits is 108000, while the sum is 37.

The square root of 55622665 is about 7458.0604046897. The cubic root of 55622665 is about 381.7249946346.

The spelling of 55622665 in words is "fifty-five million, six hundred twenty-two thousand, six hundred sixty-five".