261145362 has 16 divisors (see below), whose sum is σ = 522576000. Its totient is φ = 87000912.

The previous prime is 261145349. The next prime is 261145369. The reversal of 261145362 is 263541162.

It is a super-2 number, since 2×261145362² = 136393800188222088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261145369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (32661000).

Almost surely, 2^261145362 is an apocalyptic number.

261145362 is an abundant number, since it is smaller than the sum of its proper divisors (261430638).

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

261145362 is a wasteful number, since it uses less digits than its factorization.

261145362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23777.

The product of its digits is 8640, while the sum is 30.

The square root of 261145362 is about 16159.9926361369. The cubic root of 261145362 is about 639.1862721395.

The spelling of 261145362 in words is "two hundred sixty-one million, one hundred forty-five thousand, three hundred sixty-two".