261061458 has 32 divisors (see below), whose sum is σ = 597279744. Its totient is φ = 74518032.

The previous prime is 261061439. The next prime is 261061499. The reversal of 261061458 is 854160162.

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, 55141 + ... + 59687.

It is an arithmetic number, because the mean of its divisors is an integer number (18664992).

Almost surely, 2^261061458 is an apocalyptic number.

261061458 is an abundant number, since it is smaller than the sum of its proper divisors (336218286).

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

261061458 is a wasteful number, since it uses less digits than its factorization.

261061458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5926.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 261061458 is about 16157.3963867945. The cubic root of 261061458 is about 639.1178095927.

The spelling of 261061458 in words is "two hundred sixty-one million, sixty-one thousand, four hundred fifty-eight".