74490529 has 2 divisors, whose sum is σ = 74490530. Its totient is φ = 74490528.

The previous prime is 74490523. The next prime is 74490541. The reversal of 74490529 is 92509447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 20070400 = 7377^2 + 4480^2 .

It is an emirp because it is prime and its reverse (92509447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74490529 - 2⁷ = 74490401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74490491 and 74490500.

It is not a weakly prime, because it can be changed into another prime (74490523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37245264 + 37245265.

It is an arithmetic number, because the mean of its divisors is an integer number (37245265).

Almost surely, 2^74490529 is an apocalyptic number.

It is an amenable number.

74490529 is a deficient number, since it is larger than the sum of its proper divisors (1).

74490529 is an equidigital number, since it uses as much as digits as its factorization.

74490529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 74490529 is about 8630.7895930790. The cubic root of 74490529 is about 420.7592634095.

The spelling of 74490529 in words is "seventy-four million, four hundred ninety thousand, five hundred twenty-nine".