156066223 has 4 divisors (see below), whose sum is σ = 156114000. Its totient is φ = 156018448.

The previous prime is 156066181. The next prime is 156066233. The reversal of 156066223 is 322660651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322660651 = 1831 ⋅176221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156066223 is a prime.

It is a super-2 number, since 2×156066223² = 48713331922971458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156066233) 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, 18598 + ... + 25651.

It is an arithmetic number, because the mean of its divisors is an integer number (39028500).

Almost surely, 2^156066223 is an apocalyptic number.

156066223 is a deficient number, since it is larger than the sum of its proper divisors (47777).

156066223 is an equidigital number, since it uses as much as digits as its factorization.

156066223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47776.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 156066223 is about 12492.6467571928. The cubic root of 156066223 is about 538.3974240413.

The spelling of 156066223 in words is "one hundred fifty-six million, sixty-six thousand, two hundred twenty-three".