10115091 has 32 divisors (see below), whose sum is σ = 17318400. Its totient is φ = 5715360.

The previous prime is 10115089. The next prime is 10115107. The reversal of 10115091 is 19051101.

10115091 = 249² + 250² + ... + 357².

It is not a de Polignac number, because 10115091 - 2¹ = 10115089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10115041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20356 + ... + 20846.

It is an arithmetic number, because the mean of its divisors is an integer number (541200).

Almost surely, 2^10115091 is an apocalyptic number.

10115091 is a deficient number, since it is larger than the sum of its proper divisors (7203309).

10115091 is a wasteful number, since it uses less digits than its factorization.

10115091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 18.

The square root of 10115091 is about 3180.4230850627. The cubic root of 10115091 is about 216.2668384318.

Adding to 10115091 its reverse (19051101), we get a palindrome (29166192).

The spelling of 10115091 in words is "ten million, one hundred fifteen thousand, ninety-one".