251320052 has 12 divisors (see below), whose sum is σ = 439944960. Its totient is φ = 125621496.

The previous prime is 251320051. The next prime is 251320067. The reversal of 251320052 is 250023152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251320051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9083 + ... + 24189.

It is an arithmetic number, because the mean of its divisors is an integer number (36662080).

Almost surely, 2^251320052 is an apocalyptic number.

It is an amenable number.

251320052 is a deficient number, since it is larger than the sum of its proper divisors (188624908).

251320052 is a wasteful number, since it uses less digits than its factorization.

251320052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19270 (or 19268 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 251320052 is about 15853.0770514749. The cubic root of 251320052 is about 631.0673533337.

The spelling of 251320052 in words is "two hundred fifty-one million, three hundred twenty thousand, fifty-two".