53421623 has 2 divisors, whose sum is σ = 53421624. Its totient is φ = 53421622.

The previous prime is 53421611. The next prime is 53421629. The reversal of 53421623 is 32612435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53421623 - 2¹⁴ = 53405239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53421592 and 53421601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53421629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26710811 + 26710812.

It is an arithmetic number, because the mean of its divisors is an integer number (26710812).

Almost surely, 2^53421623 is an apocalyptic number.

53421623 is a deficient number, since it is larger than the sum of its proper divisors (1).

53421623 is an equidigital number, since it uses as much as digits as its factorization.

53421623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 53421623 is about 7309.0097140447. The cubic root of 53421623 is about 376.6220064348.

The spelling of 53421623 in words is "fifty-three million, four hundred twenty-one thousand, six hundred twenty-three".