74531117 has 2 divisors, whose sum is σ = 74531118. Its totient is φ = 74531116.

The previous prime is 74531087. The next prime is 74531123. The reversal of 74531117 is 71113547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69989956 + 4541161 = 8366^2 + 2131^2 .

It is an emirp because it is prime and its reverse (71113547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74531117 - 2¹² = 74527021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74531117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74531617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37265558 + 37265559.

It is an arithmetic number, because the mean of its divisors is an integer number (37265559).

Almost surely, 2^74531117 is an apocalyptic number.

It is an amenable number.

74531117 is a deficient number, since it is larger than the sum of its proper divisors (1).

74531117 is an equidigital number, since it uses as much as digits as its factorization.

74531117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 29.

The square root of 74531117 is about 8633.1406220448. The cubic root of 74531117 is about 420.8356698843.

The spelling of 74531117 in words is "seventy-four million, five hundred thirty-one thousand, one hundred seventeen".