261054264 has 32 divisors (see below), whose sum is σ = 655741440. Its totient is φ = 86604000.

The previous prime is 261054253. The next prime is 261054289. The reversal of 261054264 is 462450162.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20712 + ... + 30839.

It is an arithmetic number, because the mean of its divisors is an integer number (20491920).

Almost surely, 2^261054264 is an apocalyptic number.

261054264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

261054264 is an abundant number, since it is smaller than the sum of its proper divisors (394687176).

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

261054264 is a wasteful number, since it uses less digits than its factorization.

261054264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51771 (or 51767 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 261054264 is about 16157.1737627594. The cubic root of 261054264 is about 639.1119388732. Note that the first 3 decimals are identical.

The spelling of 261054264 in words is "two hundred sixty-one million, fifty-four thousand, two hundred sixty-four".