210500145 has 48 divisors (see below), whose sum is σ = 386380800. Its totient is φ = 105719040.

The previous prime is 210500123. The next prime is 210500167. The reversal of 210500145 is 541005012.

210500145 is a `hidden beast` number, since 21 + 0 + 500 + 145 = 666.

It is an interprime number because it is at equal distance from previous prime (210500123) and next prime (210500167).

It is not a de Polignac number, because 210500145 - 2⁵ = 210500113 is a prime.

It is a super-2 number, since 2×210500145² = 88620622090042050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162661 + ... + 163949.

It is an arithmetic number, because the mean of its divisors is an integer number (8049600).

Almost surely, 2^210500145 is an apocalyptic number.

It is an amenable number.

210500145 is a deficient number, since it is larger than the sum of its proper divisors (175880655).

210500145 is a wasteful number, since it uses less digits than its factorization.

210500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 210500145 is about 14508.6231255760. The cubic root of 210500145 is about 594.8636977994.

Adding to 210500145 its reverse (541005012), we get a palindrome (751505157).

The spelling of 210500145 in words is "two hundred ten million, five hundred thousand, one hundred forty-five".