261400484 has 6 divisors (see below), whose sum is σ = 457450854. Its totient is φ = 130700240.

The previous prime is 261400459. The next prime is 261400541. The reversal of 261400484 is 484004162.

261400484 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 186923584 + 74476900 = 13672^2 + 8630^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32675057 + ... + 32675064.

It is an arithmetic number, because the mean of its divisors is an integer number (76241809).

Almost surely, 2^261400484 is an apocalyptic number.

It is an amenable number.

261400484 is a deficient number, since it is larger than the sum of its proper divisors (196050370).

261400484 is a wasteful number, since it uses less digits than its factorization.

261400484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65350125 (or 65350123 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 261400484 is about 16167.8843390222. The cubic root of 261400484 is about 639.3943521715.

The spelling of 261400484 in words is "two hundred sixty-one million, four hundred thousand, four hundred eighty-four".