53421653 has 2 divisors, whose sum is σ = 53421654. Its totient is φ = 53421652.

The previous prime is 53421637. The next prime is 53421677. The reversal of 53421653 is 35612435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 1249924 = 7223^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 53421653 - 2⁴ = 53421637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53421623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26710826 + 26710827.

It is an arithmetic number, because the mean of its divisors is an integer number (26710827).

Almost surely, 2^53421653 is an apocalyptic number.

It is an amenable number.

53421653 is a deficient number, since it is larger than the sum of its proper divisors (1).

53421653 is an equidigital number, since it uses as much as digits as its factorization.

53421653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 53421653 is about 7309.0117663060. The cubic root of 53421653 is about 376.6220769347.

The spelling of 53421653 in words is "fifty-three million, four hundred twenty-one thousand, six hundred fifty-three".