491054471 has 4 divisors (see below), whose sum is σ = 491376744. Its totient is φ = 490732200.

The previous prime is 491054437. The next prime is 491054479. The reversal of 491054471 is 174450194.

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 491054471 - 2¹⁰ = 491053447 is a prime.

It is a super-3 number, since 3×491054471³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491054479) 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, 158840 + ... + 161901.

It is an arithmetic number, because the mean of its divisors is an integer number (122844186).

Almost surely, 2^491054471 is an apocalyptic number.

491054471 is a deficient number, since it is larger than the sum of its proper divisors (322273).

491054471 is a wasteful number, since it uses less digits than its factorization.

491054471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322272.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 491054471 is about 22159.7488929816. The cubic root of 491054471 is about 788.9386329063.

The spelling of 491054471 in words is "four hundred ninety-one million, fifty-four thousand, four hundred seventy-one".