261053204 has 12 divisors (see below), whose sum is σ = 469190484. Its totient is φ = 126998784.

The previous prime is 261053159. The next prime is 261053237. The reversal of 261053204 is 402350162.

It can be written as a sum of positive squares in 2 ways, for example, as 252873604 + 8179600 = 15902^2 + 2860^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261053204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881789 + ... + 882084.

It is an arithmetic number, because the mean of its divisors is an integer number (39099207).

Almost surely, 2^261053204 is an apocalyptic number.

It is an amenable number.

261053204 is a deficient number, since it is larger than the sum of its proper divisors (208137280).

261053204 is a wasteful number, since it uses less digits than its factorization.

261053204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763914 (or 1763912 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 261053204 is about 16157.1409599595. The cubic root of 261053204 is about 639.1110738429. Note that the first 3 decimals are identical.

The spelling of 261053204 in words is "two hundred sixty-one million, fifty-three thousand, two hundred four".