72148497 has 12 divisors (see below), whose sum is σ = 97398864. Its totient is φ = 47505880.

The previous prime is 72148477. The next prime is 72148507. The reversal of 72148497 is 79484127.

It is a happy number.

It is not a de Polignac number, because 72148497 - 2²² = 67954193 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72148477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18922 + ... + 22412.

It is an arithmetic number, because the mean of its divisors is an integer number (8116572).

Almost surely, 2^72148497 is an apocalyptic number.

It is an amenable number.

72148497 is a deficient number, since it is larger than the sum of its proper divisors (25250367).

72148497 is an equidigital number, since it uses as much as digits as its factorization.

72148497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 3577 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 72148497 is about 8494.0271367591. The cubic root of 72148497 is about 416.3025739580.

The spelling of 72148497 in words is "seventy-two million, one hundred forty-eight thousand, four hundred ninety-seven".