261054644 has 12 divisors (see below), whose sum is σ = 458316768. Its totient is φ = 130107000.

The previous prime is 261054613. The next prime is 261054653. The reversal of 261054644 is 446450162.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 261054644.

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, 103682 + ... + 106169.

It is an arithmetic number, because the mean of its divisors is an integer number (38193064).

Almost surely, 2^261054644 is an apocalyptic number.

It is an amenable number.

261054644 is a deficient number, since it is larger than the sum of its proper divisors (197262124).

261054644 is a wasteful number, since it uses less digits than its factorization.

261054644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210166 (or 210164 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 261054644 is about 16157.1855222375. The cubic root of 261054644 is about 639.1122489779.

The spelling of 261054644 in words is "two hundred sixty-one million, fifty-four thousand, six hundred forty-four".