30255564 has 12 divisors (see below), whose sum is σ = 70596344. Its totient is φ = 10085184.

The previous prime is 30255553. The next prime is 30255569. The reversal of 30255564 is 46555203.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255569) 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, 1260637 + ... + 1260660.

Almost surely, 2^30255564 is an apocalyptic number.

It is an amenable number.

30255564 is an abundant number, since it is smaller than the sum of its proper divisors (40340780).

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

30255564 is a wasteful number, since it uses less digits than its factorization.

30255564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521304 (or 2521302 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 30255564 is about 5500.5057949247. The cubic root of 30255564 is about 311.6030866648.

The spelling of 30255564 in words is "thirty million, two hundred fifty-five thousand, five hundred sixty-four".