74551047 has 4 divisors (see below), whose sum is σ = 99401400. Its totient is φ = 49700696.

The previous prime is 74551039. The next prime is 74551049. The reversal of 74551047 is 74015547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74015547 = 3 ⋅24671849.

It is a cyclic number.

It is not a de Polignac number, because 74551047 - 2³ = 74551039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74550999 and 74551017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74551049) 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 3 ways as a sum of consecutive naturals, for example, 12425172 + ... + 12425177.

It is an arithmetic number, because the mean of its divisors is an integer number (24850350).

Almost surely, 2^74551047 is an apocalyptic number.

74551047 is a deficient number, since it is larger than the sum of its proper divisors (24850353).

74551047 is a wasteful number, since it uses less digits than its factorization.

74551047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24850352.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 74551047 is about 8634.2948177602. The cubic root of 74551047 is about 420.8731777412.

The spelling of 74551047 in words is "seventy-four million, five hundred fifty-one thousand, forty-seven".