72533803 has 2 divisors, whose sum is σ = 72533804. Its totient is φ = 72533802.

The previous prime is 72533777. The next prime is 72533809. The reversal of 72533803 is 30833527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72533803 is a prime.

It is a super-2 number, since 2×72533803² = 10522305155285618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72533809) 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 as a sum of consecutive naturals, namely, 36266901 + 36266902.

It is an arithmetic number, because the mean of its divisors is an integer number (36266902).

Almost surely, 2^72533803 is an apocalyptic number.

72533803 is a deficient number, since it is larger than the sum of its proper divisors (1).

72533803 is an equidigital number, since it uses as much as digits as its factorization.

72533803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 72533803 is about 8516.6779321517. The cubic root of 72533803 is about 417.0423407216.

The spelling of 72533803 in words is "seventy-two million, five hundred thirty-three thousand, eight hundred three".