261122552 has 8 divisors (see below), whose sum is σ = 489604800. Its totient is φ = 130561272.

The previous prime is 261122551. The next prime is 261122581. The reversal of 261122552 is 255221162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261122551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16320152 + ... + 16320167.

It is an arithmetic number, because the mean of its divisors is an integer number (61200600).

Almost surely, 2^261122552 is an apocalyptic number.

It is an amenable number.

261122552 is a deficient number, since it is larger than the sum of its proper divisors (228482248).

261122552 is a wasteful number, since it uses less digits than its factorization.

261122552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32640325 (or 32640321 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 261122552 is about 16159.2868654529. The cubic root of 261122552 is about 639.1676614785.

The spelling of 261122552 in words is "two hundred sixty-one million, one hundred twenty-two thousand, five hundred fifty-two".