524432421 has 16 divisors (see below), whose sum is σ = 778379200. Its totient is φ = 348972624.

The previous prime is 524432417. The next prime is 524432423. The reversal of 524432421 is 124234425.

It is not a de Polignac number, because 524432421 - 2² = 524432417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524432423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2986 + ... + 32523.

It is an arithmetic number, because the mean of its divisors is an integer number (48648700).

Almost surely, 2^524432421 is an apocalyptic number.

It is an amenable number.

524432421 is a deficient number, since it is larger than the sum of its proper divisors (253946779).

524432421 is a wasteful number, since it uses less digits than its factorization.

524432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36065 (or 36059 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 524432421 is about 22900.4895362523. The cubic root of 524432421 is about 806.4235044657.

Adding to 524432421 its reverse (124234425), we get a palindrome (648666846).

The spelling of 524432421 in words is "five hundred twenty-four million, four hundred thirty-two thousand, four hundred twenty-one".