71230501 has 4 divisors (see below), whose sum is σ = 71642412. Its totient is φ = 70818592.

The previous prime is 71230483. The next prime is 71230531. The reversal of 71230501 is 10503217.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57017601 + 14212900 = 7551^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 71230501 - 2⁹ = 71229989 is a prime.

It is a super-3 number, since 3×71230501³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71230531) 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, 205696 + ... + 206041.

It is an arithmetic number, because the mean of its divisors is an integer number (17910603).

Almost surely, 2^71230501 is an apocalyptic number.

It is an amenable number.

71230501 is a deficient number, since it is larger than the sum of its proper divisors (411911).

71230501 is a wasteful number, since it uses less digits than its factorization.

71230501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411910.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 71230501 is about 8439.8164079558. The cubic root of 71230501 is about 414.5293954144.

Adding to 71230501 its reverse (10503217), we get a palindrome (81733718).

It can be divided in two parts, 712 and 30501, that added together give a palindrome (31213).

The spelling of 71230501 in words is "seventy-one million, two hundred thirty thousand, five hundred one".