213001775 has 72 divisors (see below), whose sum is σ = 325693440. Its totient is φ = 137592000.

The previous prime is 213001769. The next prime is 213001783. The reversal of 213001775 is 577100312.

213001775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213001775 - 2¹² = 212997679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2696186 + ... + 2696264.

It is an arithmetic number, because the mean of its divisors is an integer number (4523520).

Almost surely, 2^213001775 is an apocalyptic number.

213001775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213001775 is a deficient number, since it is larger than the sum of its proper divisors (112691665).

213001775 is a wasteful number, since it uses less digits than its factorization.

213001775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 213001775 is about 14594.5803296977. The cubic root of 213001775 is about 597.2109208926.

The spelling of 213001775 in words is "two hundred thirteen million, one thousand, seven hundred seventy-five".