211157051 has 32 divisors (see below), whose sum is σ = 273553920. Its totient is φ = 158630400.

The previous prime is 211156991. The next prime is 211157057. The reversal of 211157051 is 150751112.

It is a de Polignac number, because none of the positive numbers 2^k-211157051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211157057) 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 in 31 ways as a sum of consecutive naturals, for example, 137156 + ... + 138686.

It is an arithmetic number, because the mean of its divisors is an integer number (8548560).

Almost surely, 2^211157051 is an apocalyptic number.

211157051 is a deficient number, since it is larger than the sum of its proper divisors (62396869).

211157051 is a wasteful number, since it uses less digits than its factorization.

211157051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 211157051 is about 14531.2439591385. The cubic root of 211157051 is about 595.4818505726.

The spelling of 211157051 in words is "two hundred eleven million, one hundred fifty-seven thousand, fifty-one".