53443457 has 2 divisors, whose sum is σ = 53443458. Its totient is φ = 53443456.

The previous prime is 53443391. The next prime is 53443483. The reversal of 53443457 is 75434435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31013761 + 22429696 = 5569^2 + 4736^2 .

It is a cyclic number.

It is not a de Polignac number, because 53443457 - 2¹² = 53439361 is a prime.

It is a super-2 number, since 2×53443457² = 5712406192221698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53443487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721728 + 26721729.

It is an arithmetic number, because the mean of its divisors is an integer number (26721729).

Almost surely, 2^53443457 is an apocalyptic number.

It is an amenable number.

53443457 is a deficient number, since it is larger than the sum of its proper divisors (1).

53443457 is an equidigital number, since it uses as much as digits as its factorization.

53443457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 35.

The square root of 53443457 is about 7310.5031974550. The cubic root of 53443457 is about 376.6733092867.

The spelling of 53443457 in words is "fifty-three million, four hundred forty-three thousand, four hundred fifty-seven".