43391053 has 2 divisors, whose sum is σ = 43391054. Its totient is φ = 43391052.

The previous prime is 43391039. The next prime is 43391057. The reversal of 43391053 is 35019334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32114889 + 11276164 = 5667^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 43391053 - 2¹⁷ = 43259981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43391057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21695526 + 21695527.

It is an arithmetic number, because the mean of its divisors is an integer number (21695527).

Almost surely, 2^43391053 is an apocalyptic number.

It is an amenable number.

43391053 is a deficient number, since it is larger than the sum of its proper divisors (1).

43391053 is an equidigital number, since it uses as much as digits as its factorization.

43391053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 43391053 is about 6587.1885505123. The cubic root of 43391053 is about 351.3986293653.

The spelling of 43391053 in words is "forty-three million, three hundred ninety-one thousand, fifty-three".