101724491 has 6 divisors (see below), whose sum is σ = 111008676. Its totient is φ = 92446400.

The previous prime is 101724479. The next prime is 101724517. The reversal of 101724491 is 194427101.

It is a de Polignac number, because none of the positive numbers 2^k-101724491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101724421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31931 + ... + 34971.

It is an arithmetic number, because the mean of its divisors is an integer number (18501446).

Almost surely, 2^101724491 is an apocalyptic number.

101724491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101724491 is a deficient number, since it is larger than the sum of its proper divisors (9284185).

101724491 is an frugal number, since it uses more digits than its factorization.

101724491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093 (or 3052 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 101724491 is about 10085.8559874708. The cubic root of 101724491 is about 466.8118174897.

The spelling of 101724491 in words is "one hundred one million, seven hundred twenty-four thousand, four hundred ninety-one".