72503271 has 12 divisors (see below), whose sum is σ = 106502760. Its totient is φ = 47515920.

The previous prime is 72503261. The next prime is 72503303. The reversal of 72503271 is 17230527.

It is not a de Polignac number, because 72503271 - 2¹³ = 72495079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72503231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67740 + ... + 68801.

It is an arithmetic number, because the mean of its divisors is an integer number (8875230).

Almost surely, 2^72503271 is an apocalyptic number.

72503271 is a deficient number, since it is larger than the sum of its proper divisors (33999489).

72503271 is a wasteful number, since it uses less digits than its factorization.

72503271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136606 (or 136603 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 72503271 is about 8514.8852605305. The cubic root of 72503271 is about 416.9838166347.

Adding to 72503271 its reverse (17230527), we get a palindrome (89733798).

The spelling of 72503271 in words is "seventy-two million, five hundred three thousand, two hundred seventy-one".