74955497 has 4 divisors (see below), whose sum is σ = 74997636. Its totient is φ = 74913360.

The previous prime is 74955487. The next prime is 74955509. The reversal of 74955497 is 79455947.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29041321 + 45914176 = 5389^2 + 6776^2 .

It is a cyclic number.

It is not a de Polignac number, because 74955497 - 2²⁶ = 7846633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74955487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18278 + ... + 21999.

It is an arithmetic number, because the mean of its divisors is an integer number (18749409).

Almost surely, 2^74955497 is an apocalyptic number.

It is an amenable number.

74955497 is a deficient number, since it is larger than the sum of its proper divisors (42139).

74955497 is a wasteful number, since it uses less digits than its factorization.

74955497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42138.

The product of its digits is 1587600, while the sum is 50.

The square root of 74955497 is about 8657.6842746776. The cubic root of 74955497 is about 421.6329044053.

The spelling of 74955497 in words is "seventy-four million, nine hundred fifty-five thousand, four hundred ninety-seven".