53154421 has 2 divisors, whose sum is σ = 53154422. Its totient is φ = 53154420.

The previous prime is 53154397. The next prime is 53154433. The reversal of 53154421 is 12445135.

It is a happy number.

53154421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 3944196 = 7015^2 + 1986^2 .

It is a cyclic number.

It is not a de Polignac number, because 53154421 - 2²¹ = 51057269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53154481) 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, 26577210 + 26577211.

It is an arithmetic number, because the mean of its divisors is an integer number (26577211).

Almost surely, 2^53154421 is an apocalyptic number.

It is an amenable number.

53154421 is a deficient number, since it is larger than the sum of its proper divisors (1).

53154421 is an equidigital number, since it uses as much as digits as its factorization.

53154421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 53154421 is about 7290.7078531512. The cubic root of 53154421 is about 375.9930326346.

Adding to 53154421 its reverse (12445135), we get a palindrome (65599556).

The spelling of 53154421 in words is "fifty-three million, one hundred fifty-four thousand, four hundred twenty-one".