55405452 has 24 divisors (see below), whose sum is σ = 129505600. Its totient is φ = 18436176.

The previous prime is 55405447. The next prime is 55405453. The reversal of 55405452 is 25450455.

It is a super-2 number, since 2×55405452² = 6139528222648608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55405453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3699 + ... + 11157.

Almost surely, 2^55405452 is an apocalyptic number.

It is an amenable number.

55405452 is an abundant number, since it is smaller than the sum of its proper divisors (74100148).

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

55405452 is a wasteful number, since it uses less digits than its factorization.

55405452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8085 (or 8083 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55405452 is about 7443.4838617411. The cubic root of 55405452 is about 381.2274528635.

The spelling of 55405452 in words is "fifty-five million, four hundred five thousand, four hundred fifty-two".