252011385 has 16 divisors (see below), whose sum is σ = 448020480. Its totient is φ = 134406000.

The previous prime is 252011371. The next prime is 252011393. The reversal of 252011385 is 583110252.

It is a happy number.

252011385 is a `hidden beast` number, since 2 + 520 + 1 + 138 + 5 = 666.

It is not a de Polignac number, because 252011385 - 2⁸ = 252011129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933241 + ... + 933510.

It is an arithmetic number, because the mean of its divisors is an integer number (28001280).

Almost surely, 2^252011385 is an apocalyptic number.

It is an amenable number.

252011385 is a deficient number, since it is larger than the sum of its proper divisors (196009095).

252011385 is a wasteful number, since it uses less digits than its factorization.

252011385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866765 (or 1866759 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 252011385 is about 15874.8664561312. The cubic root of 252011385 is about 631.6454717592.

The spelling of 252011385 in words is "two hundred fifty-two million, eleven thousand, three hundred eighty-five".