55422555 has 16 divisors (see below), whose sum is σ = 88774944. Its totient is φ = 29525760.

The previous prime is 55422553. The next prime is 55422569. The reversal of 55422555 is 55522455.

It is not a de Polignac number, because 55422555 - 2¹ = 55422553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55422551) 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, 18417 + ... + 21213.

It is an arithmetic number, because the mean of its divisors is an integer number (5548434).

Almost surely, 2^55422555 is an apocalyptic number.

55422555 is a deficient number, since it is larger than the sum of its proper divisors (33352389).

55422555 is a wasteful number, since it uses less digits than its factorization.

55422555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126.

The product of its digits is 50000, while the sum is 33.

The square root of 55422555 is about 7444.6326302914. The cubic root of 55422555 is about 381.2666756121.

The spelling of 55422555 in words is "fifty-five million, four hundred twenty-two thousand, five hundred fifty-five".