157220227 has 2 divisors, whose sum is σ = 157220228. Its totient is φ = 157220226.

The previous prime is 157220221. The next prime is 157220243. The reversal of 157220227 is 722022751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157220227 - 2⁷ = 157220099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157220195 and 157220204.

It is not a weakly prime, because it can be changed into another prime (157220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78610113 + 78610114.

It is an arithmetic number, because the mean of its divisors is an integer number (78610114).

Almost surely, 2^157220227 is an apocalyptic number.

157220227 is a deficient number, since it is larger than the sum of its proper divisors (1).

157220227 is an equidigital number, since it uses as much as digits as its factorization.

157220227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 157220227 is about 12538.7490205363. The cubic root of 157220227 is about 539.7211946675.

Adding to 157220227 its reverse (722022751), we get a palindrome (879242978).

The spelling of 157220227 in words is "one hundred fifty-seven million, two hundred twenty thousand, two hundred twenty-seven".