210145157 has 2 divisors, whose sum is σ = 210145158. Its totient is φ = 210145156.

The previous prime is 210145141. The next prime is 210145207. The reversal of 210145157 is 751541012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188485441 + 21659716 = 13729^2 + 4654^2 .

It is a cyclic number.

It is not a de Polignac number, because 210145157 - 2⁴ = 210145141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210145057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072578 + 105072579.

It is an arithmetic number, because the mean of its divisors is an integer number (105072579).

Almost surely, 2^210145157 is an apocalyptic number.

It is an amenable number.

210145157 is a deficient number, since it is larger than the sum of its proper divisors (1).

210145157 is an equidigital number, since it uses as much as digits as its factorization.

210145157 is an odious number, because the sum of its binary digits is odd.

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

The square root of 210145157 is about 14496.3842733283. The cubic root of 210145157 is about 594.5291164126.

Adding to 210145157 its reverse (751541012), we get a palindrome (961686169).

The spelling of 210145157 in words is "two hundred ten million, one hundred forty-five thousand, one hundred fifty-seven".