55747233 has 18 divisors (see below), whose sum is σ = 85543094. Its totient is φ = 34977024.

The previous prime is 55747231. The next prime is 55747259. The reversal of 55747233 is 33274755.

55747233 is a `hidden beast` number, since 557 + 4 + 72 + 33 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 9941409 + 45805824 = 3153^2 + 6768^2 .

It is not a de Polignac number, because 55747233 - 2¹ = 55747231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55747231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8116 + ... + 13317.

Almost surely, 2^55747233 is an apocalyptic number.

It is an amenable number.

55747233 is a deficient number, since it is larger than the sum of its proper divisors (29795861).

55747233 is a wasteful number, since it uses less digits than its factorization.

55747233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21473 (or 21453 counting only the distinct ones).

The product of its digits is 88200, while the sum is 36.

The square root of 55747233 is about 7466.4069672099. The cubic root of 55747233 is about 382.0097422659.

The spelling of 55747233 in words is "fifty-five million, seven hundred forty-seven thousand, two hundred thirty-three".