53958643 has 2 divisors, whose sum is σ = 53958644. Its totient is φ = 53958642.

The previous prime is 53958623. The next prime is 53958649. The reversal of 53958643 is 34685935.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53958643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53958643.

It is not a weakly prime, because it can be changed into another prime (53958649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26979321 + 26979322.

It is an arithmetic number, because the mean of its divisors is an integer number (26979322).

Almost surely, 2^53958643 is an apocalyptic number.

53958643 is a deficient number, since it is larger than the sum of its proper divisors (1).

53958643 is an equidigital number, since it uses as much as digits as its factorization.

53958643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The square root of 53958643 is about 7345.6547019309. The cubic root of 53958643 is about 377.8797967040.

The spelling of 53958643 in words is "fifty-three million, nine hundred fifty-eight thousand, six hundred forty-three".