72506203 has 16 divisors (see below), whose sum is σ = 90936576. Its totient is φ = 56161440.

The previous prime is 72506201. The next prime is 72506219. The reversal of 72506203 is 30260527.

It is a cyclic number.

It is not a de Polignac number, because 72506203 - 2¹ = 72506201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72506201) 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, 10600 + ... + 16042.

It is an arithmetic number, because the mean of its divisors is an integer number (5683536).

Almost surely, 2^72506203 is an apocalyptic number.

72506203 is a deficient number, since it is larger than the sum of its proper divisors (18430373).

72506203 is a wasteful number, since it uses less digits than its factorization.

72506203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 72506203 is about 8515.0574278745. The cubic root of 72506203 is about 416.9894374389.

The spelling of 72506203 in words is "seventy-two million, five hundred six thousand, two hundred three".