55567872 has 120 divisors (see below), whose sum is σ = 165971520. Its totient is φ = 17879040.

The previous prime is 55567867. The next prime is 55567879. The reversal of 55567872 is 27876555.

55567872 is a `hidden beast` number, since 5 + 5 + 567 + 87 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55567879) 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, 142654 + ... + 143042.

It is an arithmetic number, because the mean of its divisors is an integer number (1383096).

Almost surely, 2^55567872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55567872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82985760).

55567872 is an abundant number, since it is smaller than the sum of its proper divisors (110403648).

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

55567872 is a wasteful number, since it uses less digits than its factorization.

55567872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 425 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 55567872 is about 7454.3860914230. The cubic root of 55567872 is about 381.5996097197.

The spelling of 55567872 in words is "fifty-five million, five hundred sixty-seven thousand, eight hundred seventy-two".