291225696 has 48 divisors (see below), whose sum is σ = 765350208. Its totient is φ = 96963200.

The previous prime is 291225659. The next prime is 291225703. The reversal of 291225696 is 696522192.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149851 + ... + 151781.

It is an arithmetic number, because the mean of its divisors is an integer number (15944796).

Almost surely, 2^291225696 is an apocalyptic number.

It is an amenable number.

291225696 is an abundant number, since it is smaller than the sum of its proper divisors (474124512).

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

291225696 is a wasteful number, since it uses less digits than its factorization.

291225696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3515 (or 3507 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 291225696 is about 17065.3360939655. The cubic root of 291225696 is about 662.8418141662.

The spelling of 291225696 in words is "two hundred ninety-one million, two hundred twenty-five thousand, six hundred ninety-six".