74510047 has 4 divisors (see below), whose sum is σ = 74672136. Its totient is φ = 74347960.

The previous prime is 74510021. The next prime is 74510057. The reversal of 74510047 is 74001547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74001547 = 47 ⋅1574501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74510047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74509997 and 74510024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74510057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80353 + ... + 81274.

It is an arithmetic number, because the mean of its divisors is an integer number (18668034).

Almost surely, 2^74510047 is an apocalyptic number.

74510047 is a deficient number, since it is larger than the sum of its proper divisors (162089).

74510047 is a wasteful number, since it uses less digits than its factorization.

74510047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162088.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 74510047 is about 8631.9202382784. The cubic root of 74510047 is about 420.7960092986.

The spelling of 74510047 in words is "seventy-four million, five hundred ten thousand, forty-seven".