72651241 has 6 divisors (see below), whose sum is σ = 78669870. Its totient is φ = 67062528.

The previous prime is 72651233. The next prime is 72651253. The reversal of 72651241 is 14215627.

It can be written as a sum of positive squares in 3 ways, for example, as 469225 + 72182016 = 685^2 + 8496^2 .

It is not a de Polignac number, because 72651241 - 2³ = 72651233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72651211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214776 + ... + 215113.

It is an arithmetic number, because the mean of its divisors is an integer number (13111645).

Almost surely, 2^72651241 is an apocalyptic number.

It is an amenable number.

72651241 is a deficient number, since it is larger than the sum of its proper divisors (6018629).

72651241 is a wasteful number, since it uses less digits than its factorization.

72651241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429915 (or 429902 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 72651241 is about 8523.5697333922. The cubic root of 72651241 is about 417.2672942733.

Adding to 72651241 its reverse (14215627), we get a palindrome (86866868).

The spelling of 72651241 in words is "seventy-two million, six hundred fifty-one thousand, two hundred forty-one".