74799157 has 2 divisors, whose sum is σ = 74799158. Its totient is φ = 74799156.

The previous prime is 74799121. The next prime is 74799169. The reversal of 74799157 is 75199747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62869041 + 11930116 = 7929^2 + 3454^2 .

It is a cyclic number.

It is not a de Polignac number, because 74799157 - 2¹¹ = 74797109 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74799157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74769157) 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, 37399578 + 37399579.

It is an arithmetic number, because the mean of its divisors is an integer number (37399579).

Almost surely, 2^74799157 is an apocalyptic number.

It is an amenable number.

74799157 is a deficient number, since it is larger than the sum of its proper divisors (1).

74799157 is an equidigital number, since it uses as much as digits as its factorization.

74799157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 74799157 is about 8648.6505883866. The cubic root of 74799157 is about 421.3395571344.

The spelling of 74799157 in words is "seventy-four million, seven hundred ninety-nine thousand, one hundred fifty-seven".