71455423 has 4 divisors (see below), whose sum is σ = 76952008. Its totient is φ = 65958840.

The previous prime is 71455381. The next prime is 71455427. The reversal of 71455423 is 32455417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71455423 is a prime.

It is a super-2 number, since 2×71455423² = 10211754952217858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71455427) 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, 2748273 + ... + 2748298.

It is an arithmetic number, because the mean of its divisors is an integer number (19238002).

Almost surely, 2^71455423 is an apocalyptic number.

71455423 is a deficient number, since it is larger than the sum of its proper divisors (5496585).

71455423 is a wasteful number, since it uses less digits than its factorization.

71455423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496584.

The product of its digits is 16800, while the sum is 31.

The square root of 71455423 is about 8453.1309584083. The cubic root of 71455423 is about 414.9652518446.

The spelling of 71455423 in words is "seventy-one million, four hundred fifty-five thousand, four hundred twenty-three".