261141534 has 24 divisors (see below), whose sum is σ = 567626592. Its totient is φ = 86767200.

The previous prime is 261141527. The next prime is 261141571. The reversal of 261141534 is 435141162.

It is a happy number.

261141534 is a `hidden beast` number, since 2 + 611 + 4 + 15 + 34 = 666.

261141534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 261141498 and 261141507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17542 + ... + 28809.

It is an arithmetic number, because the mean of its divisors is an integer number (23651108).

Almost surely, 2^261141534 is an apocalyptic number.

261141534 is an abundant number, since it is smaller than the sum of its proper divisors (306485058).

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

261141534 is a wasteful number, since it uses less digits than its factorization.

261141534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46672 (or 46669 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 261141534 is about 16159.8741950549. The cubic root of 261141534 is about 639.1831489530.

Adding to 261141534 its reverse (435141162), we get a palindrome (696282696).

The spelling of 261141534 in words is "two hundred sixty-one million, one hundred forty-one thousand, five hundred thirty-four".