261032575 has 18 divisors (see below), whose sum is σ = 331441584. Its totient is φ = 203933520.

The previous prime is 261032573. The next prime is 261032627. The reversal of 261032575 is 575230162.

It is not a de Polignac number, because 261032575 - 2¹ = 261032573 is a prime.

It is a super-2 number, since 2×261032575² = 136276010422261250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261032573) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43402 + ... + 49048.

Almost surely, 2^261032575 is an apocalyptic number.

261032575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261032575 is a deficient number, since it is larger than the sum of its proper divisors (70409009).

261032575 is an equidigital number, since it uses as much as digits as its factorization.

261032575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 261032575 is about 16156.5025608886. The cubic root of 261032575 is about 639.0942387439.

The spelling of 261032575 in words is "two hundred sixty-one million, thirty-two thousand, five hundred seventy-five".