997454271 has 16 divisors (see below), whose sum is σ = 1513923840. Its totient is φ = 578233920.

The previous prime is 997454219. The next prime is 997454291. The reversal of 997454271 is 172454799.

It is not a de Polignac number, because 997454271 - 2²³ = 989065663 is a prime.

It is a super-2 number, since 2×997454271² = 1989830045472282882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 997454271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997454291) 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, 656326 + ... + 657843.

It is an arithmetic number, because the mean of its divisors is an integer number (94620240).

Almost surely, 2^997454271 is an apocalyptic number.

997454271 is a deficient number, since it is larger than the sum of its proper divisors (516469569).

997454271 is a wasteful number, since it uses less digits than its factorization.

997454271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314206.

The product of its digits is 635040, while the sum is 48.

The square root of 997454271 is about 31582.4994419378. The cubic root of 997454271 is about 999.1507025647.

The spelling of 997454271 in words is "nine hundred ninety-seven million, four hundred fifty-four thousand, two hundred seventy-one".