261355150 has 48 divisors (see below), whose sum is σ = 558357120. Its totient is φ = 89157600.

The previous prime is 261355139. The next prime is 261355169. The reversal of 261355150 is 51553162.

261355150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72081 + ... + 75619.

It is an arithmetic number, because the mean of its divisors is an integer number (11632440).

Almost surely, 2^261355150 is an apocalyptic number.

261355150 is an abundant number, since it is smaller than the sum of its proper divisors (297001970).

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

261355150 is a wasteful number, since it uses less digits than its factorization.

261355150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 261355150 is about 16166.4823013542. The cubic root of 261355150 is about 639.3573872063.

The spelling of 261355150 in words is "two hundred sixty-one million, three hundred fifty-five thousand, one hundred fifty".