252145190 has 32 divisors (see below), whose sum is σ = 524250144. Its totient is φ = 86295040.

The previous prime is 252145183. The next prime is 252145193. The reversal of 252145190 is 91541252.

It is a super-2 number, since 2×252145190² = 127154393680272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252145193) 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, 65549 + ... + 69288.

It is an arithmetic number, because the mean of its divisors is an integer number (16382817).

Almost surely, 2^252145190 is an apocalyptic number.

252145190 is an abundant number, since it is smaller than the sum of its proper divisors (272104954).

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

252145190 is a wasteful number, since it uses less digits than its factorization.

252145190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134872.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 252145190 is about 15879.0802630379. The cubic root of 252145190 is about 631.7572423294.

The spelling of 252145190 in words is "two hundred fifty-two million, one hundred forty-five thousand, one hundred ninety".