157223029 has 2 divisors, whose sum is σ = 157223030. Its totient is φ = 157223028.

The previous prime is 157222997. The next prime is 157223051. The reversal of 157223029 is 920322751.

157223029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87048900 + 70174129 = 9330^2 + 8377^2 .

It is an emirp because it is prime and its reverse (920322751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157223029 - 2⁵ = 157222997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157224029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78611514 + 78611515.

It is an arithmetic number, because the mean of its divisors is an integer number (78611515).

Almost surely, 2^157223029 is an apocalyptic number.

It is an amenable number.

157223029 is a deficient number, since it is larger than the sum of its proper divisors (1).

157223029 is an equidigital number, since it uses as much as digits as its factorization.

157223029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 157223029 is about 12538.8607536730. The cubic root of 157223029 is about 539.7244009764.

The spelling of 157223029 in words is "one hundred fifty-seven million, two hundred twenty-three thousand, twenty-nine".