74972547 has 40 divisors (see below), whose sum is σ = 121520784. Its totient is φ = 45979488.

The previous prime is 74972519. The next prime is 74972549. The reversal of 74972547 is 74527947.

It is not a de Polignac number, because 74972547 - 2¹⁴ = 74956163 is a prime.

It is a super-3 number, since 3×74972547³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74972549) 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 39 ways as a sum of consecutive naturals, for example, 255733 + ... + 256025.

Almost surely, 2^74972547 is an apocalyptic number.

74972547 is a deficient number, since it is larger than the sum of its proper divisors (46548237).

74972547 is an frugal number, since it uses more digits than its factorization.

74972547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 309 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 74972547 is about 8658.6688930805. The cubic root of 74972547 is about 421.6648713559.

The spelling of 74972547 in words is "seventy-four million, nine hundred seventy-two thousand, five hundred forty-seven".