210155051 has 2 divisors, whose sum is σ = 210155052. Its totient is φ = 210155050.

The previous prime is 210154993. The next prime is 210155063. The reversal of 210155051 is 150551012.

It is a happy number.

210155051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210155051 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210155551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105077525 + 105077526.

It is an arithmetic number, because the mean of its divisors is an integer number (105077526).

Almost surely, 2^210155051 is an apocalyptic number.

210155051 is a deficient number, since it is larger than the sum of its proper divisors (1).

210155051 is an equidigital number, since it uses as much as digits as its factorization.

210155051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 210155051 is about 14496.7255268216. The cubic root of 210155051 is about 594.5384467550.

The spelling of 210155051 in words is "two hundred ten million, one hundred fifty-five thousand, fifty-one".