43552156021 has 8 divisors (see below), whose sum is σ = 48162285504. Its totient is φ = 39050500320.

The previous prime is 43552156009. The next prime is 43552156033. The reversal of 43552156021 is 12065125534.

43552156021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43552156009) and next prime (43552156033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43552156021 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 (43552156051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27117601 + ... + 27119206.

It is an arithmetic number, because the mean of its divisors is an integer number (6020285688).

Almost surely, 2^43552156021 is an apocalyptic number.

It is an amenable number.

43552156021 is a deficient number, since it is larger than the sum of its proper divisors (4610129483).

43552156021 is a wasteful number, since it uses less digits than its factorization.

43552156021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54236891.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 43552156021 in words is "forty-three billion, five hundred fifty-two million, one hundred fifty-six thousand, twenty-one".