74845249 has 2 divisors, whose sum is σ = 74845250. Its totient is φ = 74845248.

The previous prime is 74845093. The next prime is 74845261. The reversal of 74845249 is 94254847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40094224 + 34751025 = 6332^2 + 5895^2 .

It is a cyclic number.

It is not a de Polignac number, because 74845249 - 2¹¹ = 74843201 is a prime.

It is a super-2 number, since 2×74845249² = 11203622595744002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74845279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37422624 + 37422625.

It is an arithmetic number, because the mean of its divisors is an integer number (37422625).

Almost surely, 2^74845249 is an apocalyptic number.

It is an amenable number.

74845249 is a deficient number, since it is larger than the sum of its proper divisors (1).

74845249 is an equidigital number, since it uses as much as digits as its factorization.

74845249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 74845249 is about 8651.3148711626. The cubic root of 74845249 is about 421.4260839349.

The spelling of 74845249 in words is "seventy-four million, eight hundred forty-five thousand, two hundred forty-nine".