252740556 has 36 divisors (see below), whose sum is σ = 641544904. Its totient is φ = 83894400.

The previous prime is 252740519. The next prime is 252740557. The reversal of 252740556 is 655047252.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 252740556.

It is not an unprimeable number, because it can be changed into a prime (252740557) 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, 5890 + ... + 23241.

Almost surely, 2^252740556 is an apocalyptic number.

It is an amenable number.

252740556 is an abundant number, since it is smaller than the sum of its proper divisors (388804348).

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

252740556 is a wasteful number, since it uses less digits than its factorization.

252740556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29382 (or 29377 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 252740556 is about 15897.8160764301. The cubic root of 252740556 is about 632.2540871999.

The spelling of 252740556 in words is "two hundred fifty-two million, seven hundred forty thousand, five hundred fifty-six".