101061491 has 4 divisors (see below), whose sum is σ = 104546400. Its totient is φ = 97576584.

The previous prime is 101061473. The next prime is 101061503. The reversal of 101061491 is 194160101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101061491 - 2⁶ = 101061427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101061451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742411 + ... + 1742468.

It is an arithmetic number, because the mean of its divisors is an integer number (26136600).

Almost surely, 2^101061491 is an apocalyptic number.

101061491 is a deficient number, since it is larger than the sum of its proper divisors (3484909).

101061491 is an equidigital number, since it uses as much as digits as its factorization.

101061491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484908.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 101061491 is about 10052.9344472149. The cubic root of 101061491 is about 465.7954412346.

The spelling of 101061491 in words is "one hundred one million, sixty-one thousand, four hundred ninety-one".