210157845 has 32 divisors (see below), whose sum is σ = 340733952. Its totient is φ = 110602752.

The previous prime is 210157819. The next prime is 210157847. The reversal of 210157845 is 548751012.

It is not a de Polignac number, because 210157845 - 2¹⁸ = 209895701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210157847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548524 + ... + 548906.

It is an arithmetic number, because the mean of its divisors is an integer number (10647936).

Almost surely, 2^210157845 is an apocalyptic number.

It is an amenable number.

210157845 is a deficient number, since it is larger than the sum of its proper divisors (130576107).

210157845 is a wasteful number, since it uses less digits than its factorization.

210157845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 210157845 is about 14496.8218930909. The cubic root of 210157845 is about 594.5410815288.

The spelling of 210157845 in words is "two hundred ten million, one hundred fifty-seven thousand, eight hundred forty-five".