261568352 has 12 divisors (see below), whose sum is σ = 514962756. Its totient is φ = 130784160.

The previous prime is 261568343. The next prime is 261568361. The reversal of 261568352 is 253865162.

It is an interprime number because it is at equal distance from previous prime (261568343) and next prime (261568361).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4086974 + ... + 4087037.

It is an arithmetic number, because the mean of its divisors is an integer number (42913563).

Almost surely, 2^261568352 is an apocalyptic number.

It is an amenable number.

261568352 is a deficient number, since it is larger than the sum of its proper divisors (253394404).

261568352 is an equidigital number, since it uses as much as digits as its factorization.

261568352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174021 (or 8174013 counting only the distinct ones).

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

The square root of 261568352 is about 16173.0749086251. The cubic root of 261568352 is about 639.5311931361.

The spelling of 261568352 in words is "two hundred sixty-one million, five hundred sixty-eight thousand, three hundred fifty-two".