261052092 has 48 divisors (see below), whose sum is σ = 773489920. Its totient is φ = 74586096.

The previous prime is 261052081. The next prime is 261052109. The reversal of 261052092 is 290250162.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171898 + ... + 173409.

Almost surely, 2^261052092 is an apocalyptic number.

It is an amenable number.

261052092 is an abundant number, since it is smaller than the sum of its proper divisors (512437828).

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

261052092 is a wasteful number, since it uses less digits than its factorization.

261052092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345327 (or 345319 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 261052092 is about 16157.1065478940. The cubic root of 261052092 is about 639.1101663746.

The spelling of 261052092 in words is "two hundred sixty-one million, fifty-two thousand, ninety-two".