621252 has 18 divisors (see below), whose sum is σ = 1570478. Its totient is φ = 207072.

The previous prime is 621241. The next prime is 621259. The reversal of 621252 is 252126.

621252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 254016 = 606^2 + 504^2 .

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 (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 621252.

It is not an unprimeable number, because it can be changed into a prime (621259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8593 + ... + 8664.

2⁶²¹²⁵² is an apocalyptic number.

It is an amenable number.

621252 is an abundant number, since it is smaller than the sum of its proper divisors (949226).

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

621252 is a wasteful number, since it uses less digits than its factorization.

621252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17267 (or 17262 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 621252 is about 788.1954072437. The cubic root of 621252 is about 85.3275481647.

Adding to 621252 its reverse (252126), we get a palindrome (873378).

The spelling of 621252 in words is "six hundred twenty-one thousand, two hundred fifty-two".