74538261 has 36 divisors (see below), whose sum is σ = 126097452. Its totient is φ = 42303744.

The previous prime is 74538259. The next prime is 74538263. The reversal of 74538261 is 16283547.

It is an interprime number because it is at equal distance from previous prime (74538259) and next prime (74538263).

It can be written as a sum of positive squares in 2 ways, for example, as 68807025 + 5731236 = 8295^2 + 2394^2 .

It is not a de Polignac number, because 74538261 - 2¹ = 74538259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74538263) 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 in 35 ways as a sum of consecutive naturals, for example, 75805 + ... + 76781.

It is an arithmetic number, because the mean of its divisors is an integer number (3502707).

Almost surely, 2^74538261 is an apocalyptic number.

It is an amenable number.

74538261 is a deficient number, since it is larger than the sum of its proper divisors (51559191).

74538261 is a wasteful number, since it uses less digits than its factorization.

74538261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1160 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 74538261 is about 8633.5543665399. The cubic root of 74538261 is about 420.8491155166.

The spelling of 74538261 in words is "seventy-four million, five hundred thirty-eight thousand, two hundred sixty-one".