53448421 has 8 divisors (see below), whose sum is σ = 59545080. Its totient is φ = 47635392.

The previous prime is 53448407. The next prime is 53448427. The reversal of 53448421 is 12484435.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 53436100 = 111^2 + 7310^2 .

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 53448421 - 2⁷ = 53448293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53448427) 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, 70510 + ... + 71263.

It is an arithmetic number, because the mean of its divisors is an integer number (7443135).

Almost surely, 2^53448421 is an apocalyptic number.

It is an amenable number.

53448421 is a deficient number, since it is larger than the sum of its proper divisors (6096659).

53448421 is a wasteful number, since it uses less digits than its factorization.

53448421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141815.

The product of its digits is 15360, while the sum is 31.

The square root of 53448421 is about 7310.8427010845. The cubic root of 53448421 is about 376.6849711347.

The spelling of 53448421 in words is "fifty-three million, four hundred forty-eight thousand, four hundred twenty-one".