744531 has 4 divisors (see below), whose sum is σ = 992712. Its totient is φ = 496352.

The previous prime is 744511. The next prime is 744539. The reversal of 744531 is 135447.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 744531 - 2⁹ = 744019 is a prime.

It is a super-2 number, since 2×744531² = 1108652819922, which contains 22 as substring.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 744531.

It is not an unprimeable number, because it can be changed into a prime (744539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124086 + ... + 124091.

It is an arithmetic number, because the mean of its divisors is an integer number (248178).

2⁷⁴⁴⁵³¹ is an apocalyptic number.

744531 is a deficient number, since it is larger than the sum of its proper divisors (248181).

744531 is a wasteful number, since it uses less digits than its factorization.

744531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248180.

The product of its digits is 1680, while the sum is 24.

The square root of 744531 is about 862.8620979044. The cubic root of 744531 is about 90.6346499435.

Adding to 744531 its reverse (135447), we get a palindrome (879978).

It can be divided in two parts, 744 and 531, that added together give a triangular number (1275 = T₅₀).

The spelling of 744531 in words is "seven hundred forty-four thousand, five hundred thirty-one".