53032421 has 8 divisors (see below), whose sum is σ = 57366624. Its totient is φ = 48734640.

The previous prime is 53032417. The next prime is 53032423. The reversal of 53032421 is 12423035.

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 53032421 - 2² = 53032417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53032393 and 53032402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53032423) 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, 6035 + ... + 11936.

It is an arithmetic number, because the mean of its divisors is an integer number (7170828).

Almost surely, 2^53032421 is an apocalyptic number.

It is an amenable number.

53032421 is a deficient number, since it is larger than the sum of its proper divisors (4334203).

53032421 is a wasteful number, since it uses less digits than its factorization.

53032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53032421 is about 7282.3362322815. The cubic root of 53032421 is about 375.7051526024.

Adding to 53032421 its reverse (12423035), we get a palindrome (65455456).

The spelling of 53032421 in words is "fifty-three million, thirty-two thousand, four hundred twenty-one".