71248403 has 4 divisors (see below), whose sum is σ = 72311880. Its totient is φ = 70184928.

The previous prime is 71248369. The next prime is 71248433. The reversal of 71248403 is 30484217.

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 71248403 - 2¹² = 71244307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71248433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531638 + ... + 531771.

It is an arithmetic number, because the mean of its divisors is an integer number (18077970).

Almost surely, 2^71248403 is an apocalyptic number.

71248403 is a deficient number, since it is larger than the sum of its proper divisors (1063477).

71248403 is a wasteful number, since it uses less digits than its factorization.

71248403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063476.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 71248403 is about 8440.8769094212. The cubic root of 71248403 is about 414.5641196946.

The spelling of 71248403 in words is "seventy-one million, two hundred forty-eight thousand, four hundred three".