261574474 has 16 divisors (see below), whose sum is σ = 452769408. Its totient is φ = 111014352.

The previous prime is 261574459. The next prime is 261574477. The reversal of 261574474 is 474475162.

It is not an unprimeable number, because it can be changed into a prime (261574477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89257 + ... + 92140.

It is an arithmetic number, because the mean of its divisors is an integer number (28298088).

Almost surely, 2^261574474 is an apocalyptic number.

261574474 is a deficient number, since it is larger than the sum of its proper divisors (191194934).

261574474 is a wasteful number, since it uses less digits than its factorization.

261574474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181509.

The product of its digits is 188160, while the sum is 40.

The square root of 261574474 is about 16173.2641727018. The cubic root of 261574474 is about 639.5361825005.

The spelling of 261574474 in words is "two hundred sixty-one million, five hundred seventy-four thousand, four hundred seventy-four".