74816553 has 16 divisors (see below), whose sum is σ = 117088640. Its totient is φ = 41596416.

The previous prime is 74816551. The next prime is 74816557. The reversal of 74816553 is 35561847.

It is not a de Polignac number, because 74816553 - 2¹ = 74816551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74816551) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47368 + ... + 48921.

It is an arithmetic number, because the mean of its divisors is an integer number (7318040).

Almost surely, 2^74816553 is an apocalyptic number.

It is an amenable number.

74816553 is a deficient number, since it is larger than the sum of its proper divisors (42272087).

74816553 is a wasteful number, since it uses less digits than its factorization.

74816553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96336.

The product of its digits is 100800, while the sum is 39.

The square root of 74816553 is about 8649.6562359437. The cubic root of 74816553 is about 421.3722181744.

The spelling of 74816553 in words is "seventy-four million, eight hundred sixteen thousand, five hundred fifty-three".