72655441 has 2 divisors, whose sum is σ = 72655442. Its totient is φ = 72655440.

The previous prime is 72655397. The next prime is 72655447. The reversal of 72655441 is 14455627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 6395841 = 8140^2 + 2529^2 .

It is a cyclic number.

It is not a de Polignac number, because 72655441 - 2⁷ = 72655313 is a prime.

It is equal to p_4264981 and since 72655441 and 4264981 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 72655397 and 72655406.

It is not a weakly prime, because it can be changed into another prime (72655447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36327720 + 36327721.

It is an arithmetic number, because the mean of its divisors is an integer number (36327721).

Almost surely, 2^72655441 is an apocalyptic number.

It is an amenable number.

72655441 is a deficient number, since it is larger than the sum of its proper divisors (1).

72655441 is an equidigital number, since it uses as much as digits as its factorization.

72655441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 72655441 is about 8523.8161054776. The cubic root of 72655441 is about 417.2753349199.

The spelling of 72655441 in words is "seventy-two million, six hundred fifty-five thousand, four hundred forty-one".