71440453 has 12 divisors (see below), whose sum is σ = 82498080. Its totient is φ = 60602256.

The previous prime is 71440441. The next prime is 71440459. The reversal of 71440453 is 35404417.

It is not a de Polignac number, because 71440453 - 2¹³ = 71432261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82738 + ... + 83596.

It is an arithmetic number, because the mean of its divisors is an integer number (6874840).

Almost surely, 2^71440453 is an apocalyptic number.

It is an amenable number.

71440453 is a deficient number, since it is larger than the sum of its proper divisors (11057627).

71440453 is an equidigital number, since it uses as much as digits as its factorization.

71440453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 71440453 is about 8452.2454413014. The cubic root of 71440453 is about 414.9362712418.

The spelling of 71440453 in words is "seventy-one million, four hundred forty thousand, four hundred fifty-three".