71477243 has 4 divisors (see below), whose sum is σ = 71501808. Its totient is φ = 71452680.

The previous prime is 71477239. The next prime is 71477281. The reversal of 71477243 is 34277417.

It is a happy number.

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 71477243 - 2² = 71477239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71473243) 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, 7223 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (17875452).

Almost surely, 2^71477243 is an apocalyptic number.

71477243 is a deficient number, since it is larger than the sum of its proper divisors (24565).

71477243 is a wasteful number, since it uses less digits than its factorization.

71477243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24564.

The product of its digits is 32928, while the sum is 35.

The square root of 71477243 is about 8454.4215059340. The cubic root of 71477243 is about 415.0074861958.

The spelling of 71477243 in words is "seventy-one million, four hundred seventy-seven thousand, two hundred forty-three".