55422031 has 16 divisors (see below), whose sum is σ = 67302400. Its totient is φ = 44579808.

The previous prime is 55422011. The next prime is 55422043. The reversal of 55422031 is 13022455.

It is not a de Polignac number, because 55422031 - 2⁵ = 55421999 is a prime.

It is a super-2 number, since 2×55422031² = 6143203040329922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55421993 and 55422011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55422001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12586 + ... + 16408.

It is an arithmetic number, because the mean of its divisors is an integer number (4206400).

Almost surely, 2^55422031 is an apocalyptic number.

55422031 is a deficient number, since it is larger than the sum of its proper divisors (11880369).

55422031 is a wasteful number, since it uses less digits than its factorization.

55422031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55422031 is about 7444.5974370680. The cubic root of 55422031 is about 381.2654740293.

Adding to 55422031 its reverse (13022455), we get a palindrome (68444486).

The spelling of 55422031 in words is "fifty-five million, four hundred twenty-two thousand, thirty-one".