55838569 has 4 divisors (see below), whose sum is σ = 55861380. Its totient is φ = 55815760.

The previous prime is 55838561. The next prime is 55838581. The reversal of 55838569 is 96583855.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96583855 = 5 ⋅19316771.

It can be written as a sum of positive squares in 2 ways, for example, as 15896169 + 39942400 = 3987^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 55838569 - 2³ = 55838561 is a prime.

It is a super-2 number, since 2×55838569² = 6235891575935522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55838561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7222 + ... + 12799.

It is an arithmetic number, because the mean of its divisors is an integer number (13965345).

Almost surely, 2^55838569 is an apocalyptic number.

It is an amenable number.

55838569 is a deficient number, since it is larger than the sum of its proper divisors (22811).

55838569 is a wasteful number, since it uses less digits than its factorization.

55838569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22810.

The product of its digits is 1296000, while the sum is 49.

The square root of 55838569 is about 7472.5209267020. The cubic root of 55838569 is about 382.2182560764.

The spelling of 55838569 in words is "fifty-five million, eight hundred thirty-eight thousand, five hundred sixty-nine".