74424505 has 4 divisors (see below), whose sum is σ = 89309412. Its totient is φ = 59539600.

The previous prime is 74424491. The next prime is 74424509. The reversal of 74424505 is 50542447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50542447 = 29 ⋅1742843.

It can be written as a sum of positive squares in 2 ways, for example, as 33732864 + 40691641 = 5808^2 + 6379^2 .

It is not a de Polignac number, because 74424505 - 2⁷ = 74424377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74424509) 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, 7442446 + ... + 7442455.

It is an arithmetic number, because the mean of its divisors is an integer number (22327353).

Almost surely, 2^74424505 is an apocalyptic number.

It is an amenable number.

74424505 is a deficient number, since it is larger than the sum of its proper divisors (14884907).

74424505 is a wasteful number, since it uses less digits than its factorization.

74424505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14884906.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 74424505 is about 8626.9638343974. The cubic root of 74424505 is about 420.6349146205.

The spelling of 74424505 in words is "seventy-four million, four hundred twenty-four thousand, five hundred five".