53432121 has 8 divisors (see below), whose sum is σ = 71302720. Its totient is φ = 35591472.

The previous prime is 53432117. The next prime is 53432147. The reversal of 53432121 is 12123435.

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

It is not a de Polignac number, because 53432121 - 2² = 53432117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53432191) 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, 2926 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (8912840).

Almost surely, 2^53432121 is an apocalyptic number.

It is an amenable number.

53432121 is a deficient number, since it is larger than the sum of its proper divisors (17870599).

53432121 is a wasteful number, since it uses less digits than its factorization.

53432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14975.

The product of its digits is 720, while the sum is 21.

The square root of 53432121 is about 7309.7278335106. The cubic root of 53432121 is about 376.6466750904.

Adding to 53432121 its reverse (12123435), we get a palindrome (65555556).

The spelling of 53432121 in words is "fifty-three million, four hundred thirty-two thousand, one hundred twenty-one".