621056252 has 12 divisors (see below), whose sum is σ = 1092921480. Its totient is φ = 308792976.

The previous prime is 621056251. The next prime is 621056269. The reversal of 621056252 is 252650126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621056251) 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, 432983 + ... + 434414.

It is an arithmetic number, because the mean of its divisors is an integer number (91076790).

Almost surely, 2^621056252 is an apocalyptic number.

It is an amenable number.

621056252 is a deficient number, since it is larger than the sum of its proper divisors (471865228).

621056252 is a wasteful number, since it uses less digits than its factorization.

621056252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867580 (or 867578 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 621056252 is about 24921.0002206974. Note that the first 3 decimals coincide. The cubic root of 621056252 is about 853.1858537583.

The spelling of 621056252 in words is "six hundred twenty-one million, fifty-six thousand, two hundred fifty-two".