157287157 has 2 divisors, whose sum is σ = 157287158. Its totient is φ = 157287156.

The previous prime is 157287139. The next prime is 157287167. The reversal of 157287157 is 751782751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 42497361 = 10714^2 + 6519^2 .

It is a cyclic number.

It is not a de Polignac number, because 157287157 - 2¹⁹ = 156762869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157287107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78643578 + 78643579.

It is an arithmetic number, because the mean of its divisors is an integer number (78643579).

Almost surely, 2^157287157 is an apocalyptic number.

It is an amenable number.

157287157 is a deficient number, since it is larger than the sum of its proper divisors (1).

157287157 is an equidigital number, since it uses as much as digits as its factorization.

157287157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137200, while the sum is 43.

The square root of 157287157 is about 12541.4176630874. The cubic root of 157287157 is about 539.7977717837.

The spelling of 157287157 in words is "one hundred fifty-seven million, two hundred eighty-seven thousand, one hundred fifty-seven".