203161252 has 18 divisors (see below), whose sum is σ = 413578662. Its totient is φ = 87069024.

The previous prime is 203161223. The next prime is 203161253. The reversal of 203161252 is 252161302.

It can be written as a sum of positive squares in only one way, i.e., 194435136 + 8726116 = 13944^2 + 2954^2 .

It is not an unprimeable number, because it can be changed into a prime (203161253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 518073 + ... + 518464.

Almost surely, 2^203161252 is an apocalyptic number.

It is an amenable number.

203161252 is an abundant number, since it is smaller than the sum of its proper divisors (210417410).

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

203161252 is a wasteful number, since it uses less digits than its factorization.

203161252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036555 (or 1036546 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 203161252 is about 14253.4645612918. The cubic root of 203161252 is about 587.8686403464.

Subtracting 203161252 from its reverse (252161302), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 203161252 in words is "two hundred three million, one hundred sixty-one thousand, two hundred fifty-two".