71321454 has 12 divisors (see below), whose sum is σ = 154529856. Its totient is φ = 23773812.

The previous prime is 71321441. The next prime is 71321473. The reversal of 71321454 is 45412317.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1981134 + ... + 1981169.

It is an arithmetic number, because the mean of its divisors is an integer number (12877488).

Almost surely, 2^71321454 is an apocalyptic number.

71321454 is an abundant number, since it is smaller than the sum of its proper divisors (83208402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71321454 is a wasteful number, since it uses less digits than its factorization.

71321454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962311 (or 3962308 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 71321454 is about 8445.2030170979. The cubic root of 71321454 is about 414.7057555206.

The spelling of 71321454 in words is "seventy-one million, three hundred twenty-one thousand, four hundred fifty-four".