157749211 has 2 divisors, whose sum is σ = 157749212. Its totient is φ = 157749210.

The previous prime is 157749143. The next prime is 157749223. The reversal of 157749211 is 112947751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157749211 - 2⁷ = 157749083 is a prime.

It is a super-2 number, since 2×157749211² = 49769627142245042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157749311) 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, 78874605 + 78874606.

It is an arithmetic number, because the mean of its divisors is an integer number (78874606).

Almost surely, 2^157749211 is an apocalyptic number.

157749211 is a deficient number, since it is larger than the sum of its proper divisors (1).

157749211 is an equidigital number, since it uses as much as digits as its factorization.

157749211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 37.

The square root of 157749211 is about 12559.8252774471. The cubic root of 157749211 is about 540.3258333040.

The spelling of 157749211 in words is "one hundred fifty-seven million, seven hundred forty-nine thousand, two hundred eleven".