53421547 has 2 divisors, whose sum is σ = 53421548. Its totient is φ = 53421546.

The previous prime is 53421527. The next prime is 53421553. The reversal of 53421547 is 74512435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53421547 - 2⁷ = 53421419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53421527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26710773 + 26710774.

It is an arithmetic number, because the mean of its divisors is an integer number (26710774).

Almost surely, 2^53421547 is an apocalyptic number.

53421547 is a deficient number, since it is larger than the sum of its proper divisors (1).

53421547 is an equidigital number, since it uses as much as digits as its factorization.

53421547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 53421547 is about 7309.0045149801. The cubic root of 53421547 is about 376.6218278349.

It can be divided in two parts, 5342 and 1547, that added together give a square (6889 = 83²).

The spelling of 53421547 in words is "fifty-three million, four hundred twenty-one thousand, five hundred forty-seven".