53421637 has 2 divisors, whose sum is σ = 53421638. Its totient is φ = 53421636.

The previous prime is 53421629. The next prime is 53421653. The reversal of 53421637 is 73612435.

53421637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 8678916 = 6689^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 53421637 - 2³ = 53421629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53421599 and 53421608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53421677) 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 as a sum of consecutive naturals, namely, 26710818 + 26710819.

It is an arithmetic number, because the mean of its divisors is an integer number (26710819).

Almost surely, 2^53421637 is an apocalyptic number.

It is an amenable number.

53421637 is a deficient number, since it is larger than the sum of its proper divisors (1).

53421637 is an equidigital number, since it uses as much as digits as its factorization.

53421637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 53421637 is about 7309.0106717667. The cubic root of 53421637 is about 376.6220393347.

The spelling of 53421637 in words is "fifty-three million, four hundred twenty-one thousand, six hundred thirty-seven".