74755531 has 2 divisors, whose sum is σ = 74755532. Its totient is φ = 74755530.

The previous prime is 74755529. The next prime is 74755627. The reversal of 74755531 is 13555747.

It is a weak prime.

It is an emirp because it is prime and its reverse (13555747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74755531 - 2¹ = 74755529 is a prime.

It is a super-2 number, since 2×74755531² = 11176778830183922, which contains 22 as substring.

Together with 74755529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74755231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37377765 + 37377766.

It is an arithmetic number, because the mean of its divisors is an integer number (37377766).

Almost surely, 2^74755531 is an apocalyptic number.

74755531 is a deficient number, since it is larger than the sum of its proper divisors (1).

74755531 is an equidigital number, since it uses as much as digits as its factorization.

74755531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73500, while the sum is 37.

The square root of 74755531 is about 8646.1280929674. The cubic root of 74755531 is about 421.2576269139.

The spelling of 74755531 in words is "seventy-four million, seven hundred fifty-five thousand, five hundred thirty-one".