261150252 has 24 divisors (see below), whose sum is σ = 664746432. Its totient is φ = 79136400.

The previous prime is 261150179. The next prime is 261150319. The reversal of 261150252 is 252051162.

It is a happy number.

261150252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989074 + ... + 989337.

It is an arithmetic number, because the mean of its divisors is an integer number (27697768).

Almost surely, 2^261150252 is an apocalyptic number.

261150252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261150252 is an abundant number, since it is smaller than the sum of its proper divisors (403596180).

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

261150252 is a wasteful number, since it uses less digits than its factorization.

261150252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978429 (or 1978427 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 261150252 is about 16160.1439350026. The cubic root of 261150252 is about 639.1902617455.

The spelling of 261150252 in words is "two hundred sixty-one million, one hundred fifty thousand, two hundred fifty-two".