55569438 has 24 divisors (see below), whose sum is σ = 120578328. Its totient is φ = 18495792.

The previous prime is 55569431. The next prime is 55569439. The reversal of 55569438 is 83496555.

55569438 is a `hidden beast` number, since 5 + 556 + 94 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55569393 and 55569402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55569431) 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, 13020 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (5024097).

Almost surely, 2^55569438 is an apocalyptic number.

55569438 is an abundant number, since it is smaller than the sum of its proper divisors (65008890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55569438 is a wasteful number, since it uses less digits than its factorization.

55569438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568 (or 4565 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 55569438 is about 7454.4911295138. The cubic root of 55569438 is about 381.6031944012.

The spelling of 55569438 in words is "fifty-five million, five hundred sixty-nine thousand, four hundred thirty-eight".