74145261 has 16 divisors (see below), whose sum is σ = 105678720. Its totient is φ = 46126080.

The previous prime is 74145259. The next prime is 74145293. The reversal of 74145261 is 16254147.

It is not a de Polignac number, because 74145261 - 2¹ = 74145259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74145221) 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 15 ways as a sum of consecutive naturals, for example, 10276 + ... + 15933.

It is an arithmetic number, because the mean of its divisors is an integer number (6604920).

Almost surely, 2^74145261 is an apocalyptic number.

It is an amenable number.

74145261 is a deficient number, since it is larger than the sum of its proper divisors (31533459).

74145261 is a wasteful number, since it uses less digits than its factorization.

74145261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26276.

The product of its digits is 6720, while the sum is 30.

The square root of 74145261 is about 8610.7642517955. The cubic root of 74145261 is about 420.1081750839.

The spelling of 74145261 in words is "seventy-four million, one hundred forty-five thousand, two hundred sixty-one".