43055431552 has 32 divisors (see below), whose sum is σ = 98027993520. Its totient is φ = 18452327424.

The previous prime is 43055431547. The next prime is 43055431553. The reversal of 43055431552 is 25513455034.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×43055431552² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43055431553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24025573 + ... + 24027364.

Almost surely, 2^43055431552 is an apocalyptic number.

It is an amenable number.

43055431552 is an abundant number, since it is smaller than the sum of its proper divisors (54972561968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43055431552 is an equidigital number, since it uses as much as digits as its factorization.

43055431552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48052958 (or 48052946 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 43055431552 its reverse (25513455034), we get a palindrome (68568886586).

The spelling of 43055431552 in words is "forty-three billion, fifty-five million, four hundred thirty-one thousand, five hundred fifty-two".