72153241 has 4 divisors (see below), whose sum is σ = 75950800. Its totient is φ = 68355684.

The previous prime is 72153239. The next prime is 72153259. The reversal of 72153241 is 14235127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14235127 = 1409 ⋅10103.

It is a cyclic number.

It is not a de Polignac number, because 72153241 - 2¹ = 72153239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72153281) 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 in 3 ways as a sum of consecutive naturals, for example, 1898751 + ... + 1898788.

It is an arithmetic number, because the mean of its divisors is an integer number (18987700).

Almost surely, 2^72153241 is an apocalyptic number.

It is an amenable number.

72153241 is a deficient number, since it is larger than the sum of its proper divisors (3797559).

72153241 is a wasteful number, since it uses less digits than its factorization.

72153241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797558.

The product of its digits is 1680, while the sum is 25.

The square root of 72153241 is about 8494.3063872220. The cubic root of 72153241 is about 416.3116981773.

Adding to 72153241 its reverse (14235127), we get a palindrome (86388368).

The spelling of 72153241 in words is "seventy-two million, one hundred fifty-three thousand, two hundred forty-one".