653211252 has 36 divisors (see below), whose sum is σ = 1654039296. Its totient is φ = 217359120.

The previous prime is 653211239. The next prime is 653211257. The reversal of 653211252 is 252112356.

It is a happy number.

653211252 is a `hidden beast` number, since 6 + 532 + 1 + 125 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653211257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5677 + ... + 36587.

It is an arithmetic number, because the mean of its divisors is an integer number (45945536).

Almost surely, 2^653211252 is an apocalyptic number.

It is an amenable number.

653211252 is an abundant number, since it is smaller than the sum of its proper divisors (1000828044).

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

653211252 is a wasteful number, since it uses less digits than its factorization.

653211252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31508 (or 31503 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 653211252 is about 25557.9978089051. The cubic root of 653211252 is about 867.6632815867.

The spelling of 653211252 in words is "six hundred fifty-three million, two hundred eleven thousand, two hundred fifty-two".