73041553 has 4 divisors (see below), whose sum is σ = 78660148. Its totient is φ = 67422960.

The previous prime is 73041407. The next prime is 73041559. The reversal of 73041553 is 35514037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49392784 + 23648769 = 7028^2 + 4863^2 .

It is a cyclic number.

It is not a de Polignac number, because 73041553 - 2⁹ = 73041041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73041559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2809278 + ... + 2809303.

It is an arithmetic number, because the mean of its divisors is an integer number (19665037).

Almost surely, 2^73041553 is an apocalyptic number.

It is an amenable number.

73041553 is a deficient number, since it is larger than the sum of its proper divisors (5618595).

73041553 is a wasteful number, since it uses less digits than its factorization.

73041553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618594.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 73041553 is about 8546.4351047674. The cubic root of 73041553 is about 418.0132032642.

The spelling of 73041553 in words is "seventy-three million, forty-one thousand, five hundred fifty-three".