211071157 has 24 divisors (see below), whose sum is σ = 244230336. Its totient is φ = 180792000.

The previous prime is 211071137. The next prime is 211071187. The reversal of 211071157 is 751170112.

It is a de Polignac number, because none of the positive numbers 2^k-211071157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211071137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 433168 + ... + 433654.

It is an arithmetic number, because the mean of its divisors is an integer number (10176264).

Almost surely, 2^211071157 is an apocalyptic number.

It is an amenable number.

211071157 is a deficient number, since it is larger than the sum of its proper divisors (33159179).

211071157 is a wasteful number, since it uses less digits than its factorization.

211071157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 25.

The square root of 211071157 is about 14528.2881648183. The cubic root of 211071157 is about 595.4010966902.

The spelling of 211071157 in words is "two hundred eleven million, seventy-one thousand, one hundred fifty-seven".