206516051 has 16 divisors (see below), whose sum is σ = 253335744. Its totient is φ = 164312064.

The previous prime is 206516029. The next prime is 206516071. The reversal of 206516051 is 150615602.

It is not a de Polignac number, because 206516051 - 2⁶ = 206515987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206516051.

It is not an unprimeable number, because it can be changed into a prime (206516071) 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, 3200 + ... + 20573.

It is an arithmetic number, because the mean of its divisors is an integer number (15833484).

Almost surely, 2^206516051 is an apocalyptic number.

206516051 is a deficient number, since it is larger than the sum of its proper divisors (46819693).

206516051 is a wasteful number, since it uses less digits than its factorization.

206516051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23870.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 206516051 is about 14370.6663380652. Note that the first 3 decimals coincide. The cubic root of 206516051 is about 591.0868132316.

The spelling of 206516051 in words is "two hundred six million, five hundred sixteen thousand, fifty-one".