74792257 has 2 divisors, whose sum is σ = 74792258. Its totient is φ = 74792256.

The previous prime is 74792233. The next prime is 74792269. The reversal of 74792257 is 75229747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57017601 + 17774656 = 7551^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 74792257 - 2¹⁹ = 74267969 is a prime.

It is not a weakly prime, because it can be changed into another prime (74792287) 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 as a sum of consecutive naturals, namely, 37396128 + 37396129.

It is an arithmetic number, because the mean of its divisors is an integer number (37396129).

Almost surely, 2^74792257 is an apocalyptic number.

It is an amenable number.

74792257 is a deficient number, since it is larger than the sum of its proper divisors (1).

74792257 is an equidigital number, since it uses as much as digits as its factorization.

74792257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 43.

The square root of 74792257 is about 8648.2516730262. The cubic root of 74792257 is about 421.3266009619.

The spelling of 74792257 in words is "seventy-four million, seven hundred ninety-two thousand, two hundred fifty-seven".