210500157 has 8 divisors (see below), whose sum is σ = 320762176. Its totient is φ = 120285792.

The previous prime is 210500123. The next prime is 210500167. The reversal of 210500157 is 751005012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210500157 - 2¹¹ = 210498109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10023817 = 210500157 / (2 + 1 + 0 + 5 + 0 + 0 + 1 + 5 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210500167) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5011888 + ... + 5011929.

It is an arithmetic number, because the mean of its divisors is an integer number (40095272).

Almost surely, 2^210500157 is an apocalyptic number.

It is an amenable number.

210500157 is a deficient number, since it is larger than the sum of its proper divisors (110262019).

210500157 is a wasteful number, since it uses less digits than its factorization.

210500157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10023827.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 210500157 is about 14508.6235391232. The cubic root of 210500157 is about 594.8637091032.

Adding to 210500157 its reverse (751005012), we get a palindrome (961505169).

The spelling of 210500157 in words is "two hundred ten million, five hundred thousand, one hundred fifty-seven".