55022409 has 20 divisors (see below), whose sum is σ = 88518276. Its totient is φ = 33859296.

The previous prime is 55022393. The next prime is 55022411. The reversal of 55022409 is 90422055.

55022409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 42575625 = 3528^2 + 6525^2 .

It is not a de Polignac number, because 55022409 - 2⁴ = 55022393 is a prime.

It is a super-3 number, since 3×55022409³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55022419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25074 + ... + 27179.

Almost surely, 2^55022409 is an apocalyptic number.

It is an amenable number.

55022409 is a deficient number, since it is larger than the sum of its proper divisors (33495867).

55022409 is a wasteful number, since it uses less digits than its factorization.

55022409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52278 (or 52269 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 55022409 is about 7417.7091477086. The cubic root of 55022409 is about 380.3468877673.

The spelling of 55022409 in words is "fifty-five million, twenty-two thousand, four hundred nine".