210155005 has 16 divisors (see below), whose sum is σ = 260751744. Its totient is φ = 162475200.

The previous prime is 210154993. The next prime is 210155051. The reversal of 210155005 is 500551012.

It is not a de Polignac number, because 210155005 - 2¹³ = 210146813 is a prime.

It is a super-2 number, since 2×210155005² = 88330252253100050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24174 + ... + 31696.

It is an arithmetic number, because the mean of its divisors is an integer number (16296984).

Almost surely, 2^210155005 is an apocalyptic number.

It is an amenable number.

210155005 is a deficient number, since it is larger than the sum of its proper divisors (50596739).

210155005 is a wasteful number, since it uses less digits than its factorization.

210155005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 210155005 is about 14496.7239402563. The cubic root of 210155005 is about 594.5384033762.

The spelling of 210155005 in words is "two hundred ten million, one hundred fifty-five thousand, five".