72554450 has 24 divisors (see below), whose sum is σ = 136585008. Its totient is φ = 28670480.

The previous prime is 72554431. The next prime is 72554473. The reversal of 72554450 is 5445527.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4592 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (5691042).

Almost surely, 2^72554450 is an apocalyptic number.

72554450 is a deficient number, since it is larger than the sum of its proper divisors (64030558).

72554450 is a wasteful number, since it uses less digits than its factorization.

72554450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17578 (or 17573 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 72554450 is about 8517.8899969417. The cubic root of 72554450 is about 417.0819078198.

Adding to 72554450 its reverse (5445527), we get a palindrome (77999977).

The spelling of 72554450 in words is "seventy-two million, five hundred fifty-four thousand, four hundred fifty".