55233261 has 12 divisors (see below), whose sum is σ = 81287388. Its totient is φ = 36127104.

The previous prime is 55233253. The next prime is 55233271. The reversal of 55233261 is 16233255.

It can be written as a sum of positive squares in 2 ways, for example, as 14516100 + 40717161 = 3810^2 + 6381^2 .

It is not a de Polignac number, because 55233261 - 2³ = 55233253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55233251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57420 + ... + 58373.

It is an arithmetic number, because the mean of its divisors is an integer number (6773949).

Almost surely, 2^55233261 is an apocalyptic number.

It is an amenable number.

55233261 is a deficient number, since it is larger than the sum of its proper divisors (26054127).

55233261 is a wasteful number, since it uses less digits than its factorization.

55233261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115852 (or 115849 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 55233261 is about 7431.9083013719. The cubic root of 55233261 is about 380.8321123622.

The spelling of 55233261 in words is "fifty-five million, two hundred thirty-three thousand, two hundred sixty-one".