55422831 has 8 divisors (see below), whose sum is σ = 75108784. Its totient is φ = 36342720.

The previous prime is 55422817. The next prime is 55422883. The reversal of 55422831 is 13822455.

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

It is not a de Polignac number, because 55422831 - 2⁶ = 55422767 is a prime.

It is a super-2 number, since 2×55422831² = 6143380392109122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55422811) 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, 151246 + ... + 151611.

It is an arithmetic number, because the mean of its divisors is an integer number (9388598).

Almost surely, 2^55422831 is an apocalyptic number.

55422831 is a deficient number, since it is larger than the sum of its proper divisors (19685953).

55422831 is a wasteful number, since it uses less digits than its factorization.

55422831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302921.

The product of its digits is 9600, while the sum is 30.

The square root of 55422831 is about 7444.6511671132. The cubic root of 55422831 is about 381.2673085038.

The spelling of 55422831 in words is "fifty-five million, four hundred twenty-two thousand, eight hundred thirty-one".