210086137 has 4 divisors (see below), whose sum is σ = 210709876. Its totient is φ = 209462400.

The previous prime is 210086087. The next prime is 210086147. The reversal of 210086137 is 731680012.

210086137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76545001 + 133541136 = 8749^2 + 11556^2 .

It is a cyclic number.

It is not a de Polignac number, because 210086137 - 2¹¹ = 210084089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210086147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311364 + ... + 312037.

It is an arithmetic number, because the mean of its divisors is an integer number (52677469).

Almost surely, 2^210086137 is an apocalyptic number.

It is an amenable number.

210086137 is a deficient number, since it is larger than the sum of its proper divisors (623739).

210086137 is an equidigital number, since it uses as much as digits as its factorization.

210086137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623738.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 210086137 is about 14494.3484503444. The cubic root of 210086137 is about 594.4734526761.

The spelling of 210086137 in words is "two hundred ten million, eighty-six thousand, one hundred thirty-seven".