261056514 has 16 divisors (see below), whose sum is σ = 525925728. Its totient is φ = 86383392.

The previous prime is 261056513. The next prime is 261056519. The reversal of 261056514 is 415650162.

It is not an unprimeable number, because it can be changed into a prime (261056513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157972 + ... + 159615.

It is an arithmetic number, because the mean of its divisors is an integer number (32870358).

Almost surely, 2^261056514 is an apocalyptic number.

261056514 is an abundant number, since it is smaller than the sum of its proper divisors (264869214).

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

261056514 is a wasteful number, since it uses less digits than its factorization.

261056514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317729.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 261056514 is about 16157.2433911234. The cubic root of 261056514 is about 639.1137750148.

The spelling of 261056514 in words is "two hundred sixty-one million, fifty-six thousand, five hundred fourteen".