1224531 has 64 divisors (see below), whose sum is σ = 2457600. Its totient is φ = 583200.

The previous prime is 1224529. The next prime is 1224533. The reversal of 1224531 is 1354221.

It is an interprime number because it is at equal distance from previous prime (1224529) and next prime (1224533).

It is not a de Polignac number, because 1224531 - 2¹ = 1224529 is a prime.

It is a super-2 number, since 2×1224531² = 2998952339922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1224533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39486 + ... + 39516.

It is an arithmetic number, because the mean of its divisors is an integer number (38400).

2^1224531 is an apocalyptic number.

1224531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1224531 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1224531 is a wasteful number, since it uses less digits than its factorization.

1224531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 71 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1224531 is about 1106.5852881726. The cubic root of 1224531 is about 106.9850912352.

Adding to 1224531 its reverse (1354221), we get a palindrome (2578752).

The spelling of 1224531 in words is "one million, two hundred twenty-four thousand, five hundred thirty-one".