261434532 has 96 divisors (see below), whose sum is σ = 657957888. Its totient is φ = 80640000.

The previous prime is 261434527. The next prime is 261434557. The reversal of 261434532 is 235434162.

261434532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261434532.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 930232 + ... + 930512.

It is an arithmetic number, because the mean of its divisors is an integer number (6853728).

Almost surely, 2^261434532 is an apocalyptic number.

It is an amenable number.

261434532 is an abundant number, since it is smaller than the sum of its proper divisors (396523356).

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

261434532 is a wasteful number, since it uses less digits than its factorization.

261434532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 261434532 is about 16168.9372563567. The cubic root of 261434532 is about 639.4221118163.

Adding to 261434532 its reverse (235434162), we get a palindrome (496868694).

The spelling of 261434532 in words is "two hundred sixty-one million, four hundred thirty-four thousand, five hundred thirty-two".