55729822 has 16 divisors (see below), whose sum is σ = 86670000. Its totient is φ = 26844160.

The previous prime is 55729813. The next prime is 55729823. The reversal of 55729822 is 22892755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55729823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36429 + ... + 37927.

It is an arithmetic number, because the mean of its divisors is an integer number (5416875).

Almost surely, 2^55729822 is an apocalyptic number.

55729822 is a deficient number, since it is larger than the sum of its proper divisors (30940178).

55729822 is a wasteful number, since it uses less digits than its factorization.

55729822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its digits is 100800, while the sum is 40.

The square root of 55729822 is about 7465.2409204258. The cubic root of 55729822 is about 381.9699683087.

The spelling of 55729822 in words is "fifty-five million, seven hundred twenty-nine thousand, eight hundred twenty-two".