156222953 has 2 divisors, whose sum is σ = 156222954. Its totient is φ = 156222952.

The previous prime is 156222931. The next prime is 156222961. The reversal of 156222953 is 359222651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101344489 + 54878464 = 10067^2 + 7408^2 .

It is a cyclic number.

It is not a de Polignac number, because 156222953 - 2¹² = 156218857 is a prime.

It is a super-2 number, since 2×156222953² = 48811222088080418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156228953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78111476 + 78111477.

It is an arithmetic number, because the mean of its divisors is an integer number (78111477).

Almost surely, 2^156222953 is an apocalyptic number.

It is an amenable number.

156222953 is a deficient number, since it is larger than the sum of its proper divisors (1).

156222953 is an equidigital number, since it uses as much as digits as its factorization.

156222953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 156222953 is about 12498.9180731774. The cubic root of 156222953 is about 538.5775928506.

The spelling of 156222953 in words is "one hundred fifty-six million, two hundred twenty-two thousand, nine hundred fifty-three".