260245521 has 16 divisors (see below), whose sum is σ = 385821120. Its totient is φ = 173374560.

The previous prime is 260245499. The next prime is 260245541. The reversal of 260245521 is 125542062.

260245521 is a `hidden beast` number, since 2 + 602 + 4 + 5 + 52 + 1 = 666.

It is not a de Polignac number, because 260245521 - 2⁷ = 260245393 is a prime.

It is a super-2 number, since 2×260245521² = 135455462401122882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (260245541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51901 + ... + 56693.

It is an arithmetic number, because the mean of its divisors is an integer number (24113820).

Almost surely, 2^260245521 is an apocalyptic number.

It is an amenable number.

260245521 is a deficient number, since it is larger than the sum of its proper divisors (125575599).

260245521 is a wasteful number, since it uses less digits than its factorization.

260245521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6813 (or 6807 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 260245521 is about 16132.1269831352. The cubic root of 260245521 is about 638.4512690961.

Adding to 260245521 its reverse (125542062), we get a palindrome (385787583).

The spelling of 260245521 in words is "two hundred sixty million, two hundred forty-five thousand, five hundred twenty-one".