261178852 has 12 divisors (see below), whose sum is σ = 498614256. Its totient is φ = 118717640.

The previous prime is 261178849. The next prime is 261178867. The reversal of 261178852 is 258871162.

261178852 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 3 ways as a sum of consecutive naturals, for example, 2967898 + ... + 2967985.

It is an arithmetic number, because the mean of its divisors is an integer number (41551188).

Almost surely, 2^261178852 is an apocalyptic number.

261178852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261178852 is a deficient number, since it is larger than the sum of its proper divisors (237435404).

261178852 is a wasteful number, since it uses less digits than its factorization.

261178852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935898 (or 5935896 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 261178852 is about 16161.0288038850. The cubic root of 261178852 is about 639.2135946405.

It can be divided in two parts, 26117 and 8852, that added together give a square (34969 = 187²).

The spelling of 261178852 in words is "two hundred sixty-one million, one hundred seventy-eight thousand, eight hundred fifty-two".