43191054553 has 2 divisors, whose sum is σ = 43191054554. Its totient is φ = 43191054552.

The previous prime is 43191054527. The next prime is 43191054559. The reversal of 43191054553 is 35545019134.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39436796569 + 3754257984 = 198587^2 + 61272^2 .

It is a cyclic number.

It is not a de Polignac number, because 43191054553 - 2²⁵ = 43157500121 is a prime.

It is not a weakly prime, because it can be changed into another prime (43191054559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21595527276 + 21595527277.

It is an arithmetic number, because the mean of its divisors is an integer number (21595527277).

Almost surely, 2^43191054553 is an apocalyptic number.

It is an amenable number.

43191054553 is a deficient number, since it is larger than the sum of its proper divisors (1).

43191054553 is an equidigital number, since it uses as much as digits as its factorization.

43191054553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 43191054553 in words is "forty-three billion, one hundred ninety-one million, fifty-four thousand, five hundred fifty-three".