72553441 has 4 divisors (see below), whose sum is σ = 72586800. Its totient is φ = 72520084.

The previous prime is 72553417. The next prime is 72553483. The reversal of 72553441 is 14435527.

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.

It is a cyclic number.

It is not a de Polignac number, because 72553441 - 2¹⁷ = 72422369 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72553141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13171 + ... + 17848.

It is an arithmetic number, because the mean of its divisors is an integer number (18146700).

Almost surely, 2^72553441 is an apocalyptic number.

It is an amenable number.

72553441 is a deficient number, since it is larger than the sum of its proper divisors (33359).

72553441 is a wasteful number, since it uses less digits than its factorization.

72553441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33358.

The product of its digits is 16800, while the sum is 31.

The square root of 72553441 is about 8517.8307684527. The cubic root of 72553441 is about 417.0799743864.

Adding to 72553441 its reverse (14435527), we get a palindrome (86988968).

The spelling of 72553441 in words is "seventy-two million, five hundred fifty-three thousand, four hundred forty-one".