251200230 has 32 divisors (see below), whose sum is σ = 603362304. Its totient is φ = 66933216.

The previous prime is 251200217. The next prime is 251200237. The reversal of 251200230 is 32002152.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251200237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47499 + ... + 52521.

It is an arithmetic number, because the mean of its divisors is an integer number (18855072).

Almost surely, 2^251200230 is an apocalyptic number.

251200230 is an abundant number, since it is smaller than the sum of its proper divisors (352162074).

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

251200230 is a wasteful number, since it uses less digits than its factorization.

251200230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 251200230 is about 15849.2974607709. The cubic root of 251200230 is about 630.9670459473.

Adding to 251200230 its reverse (32002152), we get a palindrome (283202382).

The spelling of 251200230 in words is "two hundred fifty-one million, two hundred thousand, two hundred thirty".