43450422551 has 4 divisors (see below), whose sum is σ = 43469423712. Its totient is φ = 43431421392.

The previous prime is 43450422511. The next prime is 43450422583. The reversal of 43450422551 is 15522405434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43450422551 - 2¹⁰ = 43450421527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43450422511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9497150 + ... + 9501723.

It is an arithmetic number, because the mean of its divisors is an integer number (10867355928).

Almost surely, 2^43450422551 is an apocalyptic number.

43450422551 is a deficient number, since it is larger than the sum of its proper divisors (19001161).

43450422551 is a wasteful number, since it uses less digits than its factorization.

43450422551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19001160.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 43450422551 its reverse (15522405434), we get a palindrome (58972827985).

The spelling of 43450422551 in words is "forty-three billion, four hundred fifty million, four hundred twenty-two thousand, five hundred fifty-one".