55712269 has 4 divisors (see below), whose sum is σ = 57218044. Its totient is φ = 54206496.

The previous prime is 55712243. The next prime is 55712287. The reversal of 55712269 is 96221755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39816100 + 15896169 = 6310^2 + 3987^2 .

It is a cyclic number.

It is not a de Polignac number, because 55712269 - 2¹⁵ = 55679501 is a prime.

It is a super-2 number, since 2×55712269² = 6207713834256722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1505737 = 55712269 / (5 + 5 + 7 + 1 + 2 + 2 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55712669) 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 3 ways as a sum of consecutive naturals, for example, 752832 + ... + 752905.

It is an arithmetic number, because the mean of its divisors is an integer number (14304511).

Almost surely, 2^55712269 is an apocalyptic number.

It is an amenable number.

55712269 is a deficient number, since it is larger than the sum of its proper divisors (1505775).

55712269 is a wasteful number, since it uses less digits than its factorization.

55712269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505774.

The product of its digits is 37800, while the sum is 37.

The square root of 55712269 is about 7464.0651792438. The cubic root of 55712269 is about 381.9298615780.

The spelling of 55712269 in words is "fifty-five million, seven hundred twelve thousand, two hundred sixty-nine".