71280453 has 4 divisors (see below), whose sum is σ = 95040608. Its totient is φ = 47520300.

The previous prime is 71280431. The next prime is 71280467. The reversal of 71280453 is 35408217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71280453 - 2⁵ = 71280421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71280453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71280413) 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, 11880073 + ... + 11880078.

It is an arithmetic number, because the mean of its divisors is an integer number (23760152).

Almost surely, 2^71280453 is an apocalyptic number.

It is an amenable number.

71280453 is a deficient number, since it is larger than the sum of its proper divisors (23760155).

71280453 is a wasteful number, since it uses less digits than its factorization.

71280453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23760154.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 71280453 is about 8442.7751953964. The cubic root of 71280453 is about 414.6262721439.

The spelling of 71280453 in words is "seventy-one million, two hundred eighty thousand, four hundred fifty-three".