84224531 has 8 divisors (see below), whose sum is σ = 85917024. Its totient is φ = 82546240.

The previous prime is 84224509. The next prime is 84224533. The reversal of 84224531 is 13542248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84224531 - 2⁶ = 84224467 is a prime.

It is a super-2 number, since 2×84224531² = 14187543244339922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84224494 and 84224503.

It is not an unprimeable number, because it can be changed into a prime (84224533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (10739628).

Almost surely, 2^84224531 is an apocalyptic number.

84224531 is a deficient number, since it is larger than the sum of its proper divisors (1692493).

84224531 is a wasteful number, since it uses less digits than its factorization.

84224531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101.

The product of its digits is 7680, while the sum is 29.

The square root of 84224531 is about 9177.3923856398. The cubic root of 84224531 is about 438.3417802430.

Adding to 84224531 its reverse (13542248), we get a palindrome (97766779).

The spelling of 84224531 in words is "eighty-four million, two hundred twenty-four thousand, five hundred thirty-one".