71224959 has 8 divisors (see below), whose sum is σ = 102271792. Its totient is φ = 43830720.

The previous prime is 71224943. The next prime is 71224981. The reversal of 71224959 is 95942217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71224959 - 2⁴ = 71224943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1826281 = 71224959 / (7 + 1 + 2 + 2 + 4 + 9 + 5 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71224159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913102 + ... + 913179.

It is an arithmetic number, because the mean of its divisors is an integer number (12783974).

Almost surely, 2^71224959 is an apocalyptic number.

71224959 is a deficient number, since it is larger than the sum of its proper divisors (31046833).

71224959 is a wasteful number, since it uses less digits than its factorization.

71224959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826297.

The product of its digits is 45360, while the sum is 39.

The square root of 71224959 is about 8439.4880768919. The cubic root of 71224959 is about 414.5186444886.

71224959 divided by its sum of digits (39) gives a palindrome (1826281).

The spelling of 71224959 in words is "seventy-one million, two hundred twenty-four thousand, nine hundred fifty-nine".