74744531 has 2 divisors, whose sum is σ = 74744532. Its totient is φ = 74744530.

The previous prime is 74744521. The next prime is 74744569. The reversal of 74744531 is 13544747.

It is a weak prime.

It is an emirp because it is prime and its reverse (13544747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74744531 - 2¹⁰ = 74743507 is a prime.

It is a super-2 number, since 2×74744531² = 11173489828819922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74744491 and 74744500.

It is not a weakly prime, because it can be changed into another prime (74744521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37372265 + 37372266.

It is an arithmetic number, because the mean of its divisors is an integer number (37372266).

Almost surely, 2^74744531 is an apocalyptic number.

74744531 is a deficient number, since it is larger than the sum of its proper divisors (1).

74744531 is an equidigital number, since it uses as much as digits as its factorization.

74744531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 74744531 is about 8645.4919466737. The cubic root of 74744531 is about 421.2369637329.

The spelling of 74744531 in words is "seventy-four million, seven hundred forty-four thousand, five hundred thirty-one".