101266491 has 16 divisors (see below), whose sum is σ = 139916288. Its totient is φ = 65080800.

The previous prime is 101266469. The next prime is 101266507. The reversal of 101266491 is 194662101.

It is a happy number.

It is not a de Polignac number, because 101266491 - 2⁹ = 101265979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101266421) 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, 23796 + ... + 27726.

It is an arithmetic number, because the mean of its divisors is an integer number (8744768).

Almost surely, 2^101266491 is an apocalyptic number.

101266491 is a deficient number, since it is larger than the sum of its proper divisors (38649797).

101266491 is a wasteful number, since it uses less digits than its factorization.

101266491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 101266491 is about 10063.1253097634. The cubic root of 101266491 is about 466.1101789003.

The spelling of 101266491 in words is "one hundred one million, two hundred sixty-six thousand, four hundred ninety-one".