211252051 has 16 divisors (see below), whose sum is σ = 227232000. Its totient is φ = 195804000.

The previous prime is 211252043. The next prime is 211252087. The reversal of 211252051 is 150252112.

It is a cyclic number.

It is not a de Polignac number, because 211252051 - 2³ = 211252043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211252001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200476 + ... + 201526.

It is an arithmetic number, because the mean of its divisors is an integer number (14202000).

Almost surely, 2^211252051 is an apocalyptic number.

211252051 is a deficient number, since it is larger than the sum of its proper divisors (15979949).

211252051 is a wasteful number, since it uses less digits than its factorization.

211252051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 211252051 is about 14534.5124101223. The cubic root of 211252051 is about 595.5711400278.

The spelling of 211252051 in words is "two hundred eleven million, two hundred fifty-two thousand, fifty-one".