261365852 has 12 divisors (see below), whose sum is σ = 498971256. Its totient is φ = 118802640.

The previous prime is 261365851. The next prime is 261365869. The reversal of 261365852 is 258563162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261365851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970023 + ... + 2970110.

It is an arithmetic number, because the mean of its divisors is an integer number (41580938).

Almost surely, 2^261365852 is an apocalyptic number.

261365852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261365852 is a deficient number, since it is larger than the sum of its proper divisors (237605404).

261365852 is a wasteful number, since it uses less digits than its factorization.

261365852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940148 (or 5940146 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 261365852 is about 16166.8132914313. The cubic root of 261365852 is about 639.3661139132.

The spelling of 261365852 in words is "two hundred sixty-one million, three hundred sixty-five thousand, eight hundred fifty-two".