156426233 has 2 divisors, whose sum is σ = 156426234. Its totient is φ = 156426232.

The previous prime is 156426229. The next prime is 156426251. The reversal of 156426233 is 332624651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151462249 + 4963984 = 12307^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 156426233 - 2² = 156426229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 156426233.

It is not a weakly prime, because it can be changed into another prime (156426253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78213116 + 78213117.

It is an arithmetic number, because the mean of its divisors is an integer number (78213117).

Almost surely, 2^156426233 is an apocalyptic number.

It is an amenable number.

156426233 is a deficient number, since it is larger than the sum of its proper divisors (1).

156426233 is an equidigital number, since it uses as much as digits as its factorization.

156426233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 156426233 is about 12507.0473334037. The cubic root of 156426233 is about 538.8110937513.

The spelling of 156426233 in words is "one hundred fifty-six million, four hundred twenty-six thousand, two hundred thirty-three".