55240569 has 16 divisors (see below), whose sum is σ = 82607040. Its totient is φ = 36480960.

The previous prime is 55240547. The next prime is 55240589. The reversal of 55240569 is 96504255.

55240569 is a `hidden beast` number, since 5 + 52 + 40 + 569 = 666.

It is not a de Polignac number, because 55240569 - 2⁸ = 55240313 is a prime.

It is a super-2 number, since 2×55240569² = 6103040926887522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55240529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6672 + ... + 12449.

It is an arithmetic number, because the mean of its divisors is an integer number (5162940).

Almost surely, 2^55240569 is an apocalyptic number.

It is an amenable number.

55240569 is a deficient number, since it is larger than the sum of its proper divisors (27366471).

55240569 is a wasteful number, since it uses less digits than its factorization.

55240569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19237 (or 19231 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 55240569 is about 7432.3999488725. The cubic root of 55240569 is about 380.8489077876.

The spelling of 55240569 in words is "fifty-five million, two hundred forty thousand, five hundred sixty-nine".