260321457 has 12 divisors (see below), whose sum is σ = 381518480. Its totient is φ = 157770360.

The previous prime is 260321447. The next prime is 260321471. The reversal of 260321457 is 754123062.

It is not a de Polignac number, because 260321457 - 2⁷ = 260321329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260321407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358207 + ... + 358932.

Almost surely, 2^260321457 is an apocalyptic number.

It is an amenable number.

260321457 is a deficient number, since it is larger than the sum of its proper divisors (121197023).

260321457 is a wasteful number, since it uses less digits than its factorization.

260321457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717164 (or 717153 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 260321457 is about 16134.4803758906. The cubic root of 260321457 is about 638.5133601051.

The spelling of 260321457 in words is "two hundred sixty million, three hundred twenty-one thousand, four hundred fifty-seven".