71382751 has 4 divisors (see below), whose sum is σ = 77872104. Its totient is φ = 64893400.

The previous prime is 71382733. The next prime is 71382767. The reversal of 71382751 is 15728317.

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

It is not a de Polignac number, because 71382751 - 2¹³ = 71374559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71382781) 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, 3244660 + ... + 3244681.

It is an arithmetic number, because the mean of its divisors is an integer number (19468026).

Almost surely, 2^71382751 is an apocalyptic number.

71382751 is a deficient number, since it is larger than the sum of its proper divisors (6489353).

71382751 is a wasteful number, since it uses less digits than its factorization.

71382751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489352.

The product of its digits is 11760, while the sum is 34.

The square root of 71382751 is about 8448.8313393037. The cubic root of 71382751 is about 414.8245273548.

It can be divided in two parts, 7138 and 2751, that added together give a palindrome (9889).

The spelling of 71382751 in words is "seventy-one million, three hundred eighty-two thousand, seven hundred fifty-one".