261052635 has 32 divisors (see below), whose sum is σ = 433255680. Its totient is φ = 134064000.

The previous prime is 261052607. The next prime is 261052637. The reversal of 261052635 is 536250162.

It is not a de Polignac number, because 261052635 - 2¹⁰ = 261051611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261052637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247860 + ... + 248910.

It is an arithmetic number, because the mean of its divisors is an integer number (13539240).

Almost surely, 2^261052635 is an apocalyptic number.

261052635 is a deficient number, since it is larger than the sum of its proper divisors (172203045).

261052635 is a wasteful number, since it uses less digits than its factorization.

261052635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 261052635 is about 16157.1233516366. The cubic root of 261052635 is about 639.1106095002.

The spelling of 261052635 in words is "two hundred sixty-one million, fifty-two thousand, six hundred thirty-five".