156226361 has 2 divisors, whose sum is σ = 156226362. Its totient is φ = 156226360.

The previous prime is 156226339. The next prime is 156226363. The reversal of 156226361 is 163622651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150675625 + 5550736 = 12275^2 + 2356^2 .

It is a cyclic number.

It is not a de Polignac number, because 156226361 - 2²² = 152032057 is a prime.

Together with 156226363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156226363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78113180 + 78113181.

It is an arithmetic number, because the mean of its divisors is an integer number (78113181).

Almost surely, 2^156226361 is an apocalyptic number.

It is an amenable number.

156226361 is a deficient number, since it is larger than the sum of its proper divisors (1).

156226361 is an equidigital number, since it uses as much as digits as its factorization.

156226361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 156226361 is about 12499.0544042339. The cubic root of 156226361 is about 538.5815091745.

The spelling of 156226361 in words is "one hundred fifty-six million, two hundred twenty-six thousand, three hundred sixty-one".