156401443 has 4 divisors (see below), whose sum is σ = 170619768. Its totient is φ = 142183120.

The previous prime is 156401423. The next prime is 156401447. The reversal of 156401443 is 344104651.

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 156401443 - 2⁹ = 156400931 is a prime.

It is a super-2 number, since 2×156401443² = 48922822744964498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156401447) 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, 7109146 + ... + 7109167.

It is an arithmetic number, because the mean of its divisors is an integer number (42654942).

Almost surely, 2^156401443 is an apocalyptic number.

156401443 is a deficient number, since it is larger than the sum of its proper divisors (14218325).

156401443 is a wasteful number, since it uses less digits than its factorization.

156401443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14218324.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 156401443 is about 12506.0562528720. The cubic root of 156401443 is about 538.7826291466.

The spelling of 156401443 in words is "one hundred fifty-six million, four hundred one thousand, four hundred forty-three".