261148484 has 6 divisors (see below), whose sum is σ = 457009854. Its totient is φ = 130574240.

The previous prime is 261148477. The next prime is 261148499. The reversal of 261148484 is 484841162.

261148484 is digitally balanced in base 2, 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., 239320900 + 21827584 = 15470^2 + 4672^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32643557 + ... + 32643564.

It is an arithmetic number, because the mean of its divisors is an integer number (76168309).

Almost surely, 2^261148484 is an apocalyptic number.

It is an amenable number.

261148484 is a deficient number, since it is larger than the sum of its proper divisors (195861370).

261148484 is a wasteful number, since it uses less digits than its factorization.

261148484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65287125 (or 65287123 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 261148484 is about 16160.0892324269. The cubic root of 261148484 is about 639.1888192925.

The spelling of 261148484 in words is "two hundred sixty-one million, one hundred forty-eight thousand, four hundred eighty-four".