55222545 has 32 divisors (see below), whose sum is σ = 106921728. Its totient is φ = 23758848.

The previous prime is 55222513. The next prime is 55222549. The reversal of 55222545 is 54522255.

It is not a de Polignac number, because 55222545 - 2⁵ = 55222513 is a prime.

It is a super-3 number, since 3×55222545³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55222549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13684 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (3341304).

Almost surely, 2^55222545 is an apocalyptic number.

It is an amenable number.

55222545 is a deficient number, since it is larger than the sum of its proper divisors (51699183).

55222545 is a wasteful number, since it uses less digits than its factorization.

55222545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30969.

The product of its digits is 20000, while the sum is 30.

The square root of 55222545 is about 7431.1873210141. The cubic root of 55222545 is about 380.8074819083.

The spelling of 55222545 in words is "fifty-five million, two hundred twenty-two thousand, five hundred forty-five".