157500281 has 2 divisors, whose sum is σ = 157500282. Its totient is φ = 157500280.

The previous prime is 157500221. The next prime is 157500289. The reversal of 157500281 is 182005751.

157500281 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., 144961600 + 12538681 = 12040^2 + 3541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157500281 is a prime.

It is a super-2 number, since 2×157500281² = 49612677030157922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157500289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78750140 + 78750141.

It is an arithmetic number, because the mean of its divisors is an integer number (78750141).

Almost surely, 2^157500281 is an apocalyptic number.

It is an amenable number.

157500281 is a deficient number, since it is larger than the sum of its proper divisors (1).

157500281 is an equidigital number, since it uses as much as digits as its factorization.

157500281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 157500281 is about 12549.9115933141. The cubic root of 157500281 is about 540.0414702948.

The spelling of 157500281 in words is "one hundred fifty-seven million, five hundred thousand, two hundred eighty-one".