74982251 has 4 divisors (see below), whose sum is σ = 75114600. Its totient is φ = 74849904.

The previous prime is 74982247. The next prime is 74982253. The reversal of 74982251 is 15228947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15228947 = 3739 ⋅4073.

It is a cyclic number.

It is not a de Polignac number, because 74982251 - 2² = 74982247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74982253) 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, 65321 + ... + 66458.

It is an arithmetic number, because the mean of its divisors is an integer number (18778650).

Almost surely, 2^74982251 is an apocalyptic number.

74982251 is a deficient number, since it is larger than the sum of its proper divisors (132349).

74982251 is a wasteful number, since it uses less digits than its factorization.

74982251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132348.

The product of its digits is 40320, while the sum is 38.

The square root of 74982251 is about 8659.2292382175. The cubic root of 74982251 is about 421.6830631677.

The spelling of 74982251 in words is "seventy-four million, nine hundred eighty-two thousand, two hundred fifty-one".