260521345 has 32 divisors (see below), whose sum is σ = 394771968. Its totient is φ = 160816128.

The previous prime is 260521333. The next prime is 260521399. The reversal of 260521345 is 543125062.

It is a cyclic number.

It is not a de Polignac number, because 260521345 - 2¹⁵ = 260488577 is a prime.

It is a Duffinian number.

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, 4167 + ... + 23203.

It is an arithmetic number, because the mean of its divisors is an integer number (12336624).

Almost surely, 2^260521345 is an apocalyptic number.

It is an amenable number.

260521345 is a deficient number, since it is larger than the sum of its proper divisors (134250623).

260521345 is a wasteful number, since it uses less digits than its factorization.

260521345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19089.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 260521345 is about 16140.6736228696. The cubic root of 260521345 is about 638.6767459265.

The spelling of 260521345 in words is "two hundred sixty million, five hundred twenty-one thousand, three hundred forty-five".