74525287 has 4 divisors (see below), whose sum is σ = 74561320. Its totient is φ = 74489256.

The previous prime is 74525281. The next prime is 74525291. The reversal of 74525287 is 78252547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78252547 = 17 ⋅4603091.

It is a cyclic number.

It is not a de Polignac number, because 74525287 - 2⁷ = 74525159 is a prime.

It is a super-3 number, since 3×74525287³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74525281) 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, 14712 + ... + 19117.

It is an arithmetic number, because the mean of its divisors is an integer number (18640330).

Almost surely, 2^74525287 is an apocalyptic number.

74525287 is a deficient number, since it is larger than the sum of its proper divisors (36033).

74525287 is a wasteful number, since it uses less digits than its factorization.

74525287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36032.

The product of its digits is 156800, while the sum is 40.

The square root of 74525287 is about 8632.8029631169. The cubic root of 74525287 is about 420.8246966782.

The spelling of 74525287 in words is "seventy-four million, five hundred twenty-five thousand, two hundred eighty-seven".