55228269 has 8 divisors (see below), whose sum is σ = 77513440. Its totient is φ = 34880976.

The previous prime is 55228253. The next prime is 55228319. The reversal of 55228269 is 96282255.

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

It is not a de Polignac number, because 55228269 - 2⁴ = 55228253 is a prime.

It is a super-2 number, since 2×55228269² = 6100323393472722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228249) 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, 484402 + ... + 484515.

It is an arithmetic number, because the mean of its divisors is an integer number (9689180).

Almost surely, 2^55228269 is an apocalyptic number.

It is an amenable number.

55228269 is a deficient number, since it is larger than the sum of its proper divisors (22285171).

55228269 is a wasteful number, since it uses less digits than its factorization.

55228269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968939.

The product of its digits is 86400, while the sum is 39.

The square root of 55228269 is about 7431.5724446445. The cubic root of 55228269 is about 380.8206387734.

The spelling of 55228269 in words is "fifty-five million, two hundred twenty-eight thousand, two hundred sixty-nine".