261102572 has 6 divisors (see below), whose sum is σ = 456929508. Its totient is φ = 130551284.

The previous prime is 261102557. The next prime is 261102607. The reversal of 261102572 is 275201162.

261102572 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

261102572 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32637818 + ... + 32637825.

It is an arithmetic number, because the mean of its divisors is an integer number (76154918).

Almost surely, 2^261102572 is an apocalyptic number.

It is an amenable number.

261102572 is a deficient number, since it is larger than the sum of its proper divisors (195826936).

261102572 is a wasteful number, since it uses less digits than its factorization.

261102572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65275647 (or 65275645 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 261102572 is about 16158.6686332755. The cubic root of 261102572 is about 639.1513589218.

It can be divided in two parts, 26110 and 2572, that added together give a palindrome (28682).

The spelling of 261102572 in words is "two hundred sixty-one million, one hundred two thousand, five hundred seventy-two".