10259991 has 24 divisors (see below), whose sum is σ = 17066400. Its totient is φ = 5818176.

The previous prime is 10259987. The next prime is 10259999. The reversal of 10259991 is 19995201.

10259991 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10259991 - 2² = 10259987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10259999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8841 + ... + 9933.

It is an arithmetic number, because the mean of its divisors is an integer number (711100).

Almost surely, 2^10259991 is an apocalyptic number.

10259991 is a deficient number, since it is larger than the sum of its proper divisors (6806409).

10259991 is a wasteful number, since it uses less digits than its factorization.

10259991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 10259991 is about 3203.1220707304. The cubic root of 10259991 is about 217.2946297668.

The spelling of 10259991 in words is "ten million, two hundred fifty-nine thousand, nine hundred ninety-one".