74531 has 2 divisors, whose sum is σ = 74532. Its totient is φ = 74530.

The previous prime is 74527. The next prime is 74551. The reversal of 74531 is 13547.

It is a happy number.

74531 is an esthetic number in base 9 and base 16, because in such bases its adjacent digits differ by 1.

It is an a-pointer prime, because the next prime (74551) can be obtained adding 74531 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74531 - 2² = 74527 is a prime.

It is a super-2 number, since 2×74531² = 11109739922, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74531.

It is not a weakly prime, because it can be changed into another prime (74521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37265 + 37266.

It is an arithmetic number, because the mean of its divisors is an integer number (37266).

2⁷⁴⁵³¹ is an apocalyptic number.

74531 is a deficient number, since it is larger than the sum of its proper divisors (1).

74531 is an equidigital number, since it uses as much as digits as its factorization.

74531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 20.

The square root of 74531 is about 273.0036629791. The cubic root of 74531 is about 42.0835449673.

The spelling of 74531 in words is "seventy-four thousand, five hundred thirty-one".