71224937 has 4 divisors (see below), whose sum is σ = 81399936. Its totient is φ = 61049940.

The previous prime is 71224931. The next prime is 71224943. The reversal of 71224937 is 73942217.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73942217 = 23 ⋅3214879.

It is an interprime number because it is at equal distance from previous prime (71224931) and next prime (71224943).

It is not a de Polignac number, because 71224937 - 2²⁰ = 70176361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71224897 and 71224906.

It is not an unprimeable number, because it can be changed into a prime (71224931) 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, 5087489 + ... + 5087502.

It is an arithmetic number, because the mean of its divisors is an integer number (20349984).

Almost surely, 2^71224937 is an apocalyptic number.

It is an amenable number.

71224937 is a deficient number, since it is larger than the sum of its proper divisors (10174999).

71224937 is a wasteful number, since it uses less digits than its factorization.

71224937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10174998.

The product of its digits is 21168, while the sum is 35.

The square root of 71224937 is about 8439.4867734952. The cubic root of 71224937 is about 414.5186018097.

The spelling of 71224937 in words is "seventy-one million, two hundred twenty-four thousand, nine hundred thirty-seven".