55636822 has 4 divisors (see below), whose sum is σ = 83455236. Its totient is φ = 27818410.

The previous prime is 55636811. The next prime is 55636829. The reversal of 55636822 is 22863655.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55636829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13909204 + ... + 13909207.

It is an arithmetic number, because the mean of its divisors is an integer number (20863809).

Almost surely, 2^55636822 is an apocalyptic number.

55636822 is a deficient number, since it is larger than the sum of its proper divisors (27818414).

55636822 is a wasteful number, since it uses less digits than its factorization.

55636822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27818413.

The product of its digits is 86400, while the sum is 37.

The square root of 55636822 is about 7459.0094516631. The cubic root of 55636822 is about 381.7573772513.

The spelling of 55636822 in words is "fifty-five million, six hundred thirty-six thousand, eight hundred twenty-two".