4563621252 has 18 divisors (see below), whose sum is σ = 11535820478. Its totient is φ = 1521207072.

The previous prime is 4563621241. The next prime is 4563621263. The reversal of 4563621252 is 2521263654.

4563621252 is a `hidden beast` number, since 4 + 5 + 6 + 3 + 621 + 25 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (4563621241) and next prime (4563621263).

It can be written as a sum of positive squares in only one way, i.e., 2831729796 + 1731891456 = 53214^2 + 41616^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 126767257 = 4563621252 / (4 + 5 + 6 + 3 + 6 + 2 + 1 + 2 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63383593 + ... + 63383664.

Almost surely, 2^4563621252 is an apocalyptic number.

It is an amenable number.

4563621252 is an abundant number, since it is smaller than the sum of its proper divisors (6972199226).

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

4563621252 is a wasteful number, since it uses less digits than its factorization.

4563621252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126767267 (or 126767262 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 4563621252 is about 67554.5798003363. The cubic root of 4563621252 is about 1658.7077149023.

The spelling of 4563621252 in words is "four billion, five hundred sixty-three million, six hundred twenty-one thousand, two hundred fifty-two".