72154603 has 2 divisors, whose sum is σ = 72154604. Its totient is φ = 72154602.

The previous prime is 72154597. The next prime is 72154633. The reversal of 72154603 is 30645127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72154603 - 2⁹ = 72154091 is a prime.

It is not a weakly prime, because it can be changed into another prime (72154633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36077301 + 36077302.

It is an arithmetic number, because the mean of its divisors is an integer number (36077302).

Almost surely, 2^72154603 is an apocalyptic number.

72154603 is a deficient number, since it is larger than the sum of its proper divisors (1).

72154603 is an equidigital number, since it uses as much as digits as its factorization.

72154603 is an odious number, because the sum of its binary digits is odd.

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

The square root of 72154603 is about 8494.3865581924. The cubic root of 72154603 is about 416.3143176622.

The spelling of 72154603 in words is "seventy-two million, one hundred fifty-four thousand, six hundred three".