156648229 has 2 divisors, whose sum is σ = 156648230. Its totient is φ = 156648228.

The previous prime is 156648199. The next prime is 156648253. The reversal of 156648229 is 922846651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84364225 + 72284004 = 9185^2 + 8502^2 .

It is a cyclic number.

It is not a de Polignac number, because 156648229 - 2⁵ = 156648197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156648029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78324114 + 78324115.

It is an arithmetic number, because the mean of its divisors is an integer number (78324115).

Almost surely, 2^156648229 is an apocalyptic number.

It is an amenable number.

156648229 is a deficient number, since it is larger than the sum of its proper divisors (1).

156648229 is an equidigital number, since it uses as much as digits as its factorization.

156648229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 156648229 is about 12515.9190233878. The cubic root of 156648229 is about 539.0658621184.

The spelling of 156648229 in words is "one hundred fifty-six million, six hundred forty-eight thousand, two hundred twenty-nine".