211157450 has 96 divisors (see below), whose sum is σ = 478362240. Its totient is φ = 67737600.

The previous prime is 211157447. The next prime is 211157467. The reversal of 211157450 is 54751112.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 751310 + ... + 751590.

It is an arithmetic number, because the mean of its divisors is an integer number (4982940).

Almost surely, 2^211157450 is an apocalyptic number.

211157450 is an abundant number, since it is smaller than the sum of its proper divisors (267204790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211157450 is a wasteful number, since it uses less digits than its factorization.

211157450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 211157450 is about 14531.2576881700. The cubic root of 211157450 is about 595.4822256443.

The spelling of 211157450 in words is "two hundred eleven million, one hundred fifty-seven thousand, four hundred fifty".