72503461 has 16 divisors (see below), whose sum is σ = 76912000. Its totient is φ = 68257728.

The previous prime is 72503437. The next prime is 72503471. The reversal of 72503461 is 16430527.

It is a cyclic number.

It is not a de Polignac number, because 72503461 - 2¹⁷ = 72372389 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 (72503401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316495 + ... + 316723.

It is an arithmetic number, because the mean of its divisors is an integer number (4807000).

Almost surely, 2^72503461 is an apocalyptic number.

It is an amenable number.

72503461 is a deficient number, since it is larger than the sum of its proper divisors (4408539).

72503461 is a wasteful number, since it uses less digits than its factorization.

72503461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 72503461 is about 8514.8964174557. The cubic root of 72503461 is about 416.9841808797.

Adding to 72503461 its reverse (16430527), we get a palindrome (88933988).

The spelling of 72503461 in words is "seventy-two million, five hundred three thousand, four hundred sixty-one".