211057456 has 10 divisors (see below), whose sum is σ = 408923852. Its totient is φ = 105528720.

The previous prime is 211057411. The next prime is 211057471. The reversal of 211057456 is 654750112.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6595530 + ... + 6595561.

Almost surely, 2^211057456 is an apocalyptic number.

It is an amenable number.

211057456 is a deficient number, since it is larger than the sum of its proper divisors (197866396).

211057456 is a wasteful number, since it uses less digits than its factorization.

211057456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13191099 (or 13191093 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 211057456 is about 14527.8166287987. The cubic root of 211057456 is about 595.3882135674.

It can be divided in two parts, 21105 and 7456, that added together give a 4-th power (28561 = 13⁴).

The spelling of 211057456 in words is "two hundred eleven million, fifty-seven thousand, four hundred fifty-six".