55187622 has 48 divisors (see below), whose sum is σ = 142668720. Its totient is φ = 15767136.

The previous prime is 55187617. The next prime is 55187623. The reversal of 55187622 is 22678155.

It is a happy number.

55187622 is a `hidden beast` number, since 551 + 87 + 6 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55187623) 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 23 ways as a sum of consecutive naturals, for example, 7783 + ... + 13074.

It is an arithmetic number, because the mean of its divisors is an integer number (2972265).

Almost surely, 2^55187622 is an apocalyptic number.

55187622 is an abundant number, since it is smaller than the sum of its proper divisors (87481098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55187622 is a wasteful number, since it uses less digits than its factorization.

55187622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20882 (or 20869 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 55187622 is about 7428.8371903011. The cubic root of 55187622 is about 380.7271901596.

The spelling of 55187622 in words is "fifty-five million, one hundred eighty-seven thousand, six hundred twenty-two".