261047652 has 24 divisors (see below), whose sum is σ = 628760832. Its totient is φ = 84208800.

The previous prime is 261047651. The next prime is 261047653. The reversal of 261047652 is 256740162.

It is an interprime number because it is at equal distance from previous prime (261047651) and next prime (261047653).

It is a super-2 number, since 2×261047652² = 136291753229426208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261047651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350499 + ... + 351242.

It is an arithmetic number, because the mean of its divisors is an integer number (26198368).

Almost surely, 2^261047652 is an apocalyptic number.

It is an amenable number.

261047652 is an abundant number, since it is smaller than the sum of its proper divisors (367713180).

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

261047652 is a wasteful number, since it uses less digits than its factorization.

261047652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701779 (or 701777 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 261047652 is about 16156.9691464705. The cubic root of 261047652 is about 639.1065430043.

The spelling of 261047652 in words is "two hundred sixty-one million, forty-seven thousand, six hundred fifty-two".