53378443 has 2 divisors, whose sum is σ = 53378444. Its totient is φ = 53378442.

The previous prime is 53378407. The next prime is 53378461. The reversal of 53378443 is 34487335.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53378443 is a prime.

It is not a weakly prime, because it can be changed into another prime (53378243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26689221 + 26689222.

It is an arithmetic number, because the mean of its divisors is an integer number (26689222).

Almost surely, 2^53378443 is an apocalyptic number.

53378443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53378443 is an equidigital number, since it uses as much as digits as its factorization.

53378443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 53378443 is about 7306.0552283705. The cubic root of 53378443 is about 376.5205062002.

The spelling of 53378443 in words is "fifty-three million, three hundred seventy-eight thousand, four hundred forty-three".