157871029 has 2 divisors, whose sum is σ = 157871030. Its totient is φ = 157871028.

The previous prime is 157871023. The next prime is 157871039. The reversal of 157871029 is 920178751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85655025 + 72216004 = 9255^2 + 8498^2 .

It is a cyclic number.

It is not a de Polignac number, because 157871029 - 2¹¹ = 157868981 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 157870982 and 157871000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157871023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78935514 + 78935515.

It is an arithmetic number, because the mean of its divisors is an integer number (78935515).

Almost surely, 2^157871029 is an apocalyptic number.

It is an amenable number.

157871029 is a deficient number, since it is larger than the sum of its proper divisors (1).

157871029 is an equidigital number, since it uses as much as digits as its factorization.

157871029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 157871029 is about 12564.6738517162. The cubic root of 157871029 is about 540.4648820219.

The spelling of 157871029 in words is "one hundred fifty-seven million, eight hundred seventy-one thousand, twenty-nine".