212535897 has 16 divisors (see below), whose sum is σ = 326418432. Its totient is φ = 120491280.

The previous prime is 212535857. The next prime is 212535899. The reversal of 212535897 is 798535212.

It is a happy number.

It is not a de Polignac number, because 212535897 - 2¹⁰ = 212534873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212535899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37179 + ... + 42512.

It is an arithmetic number, because the mean of its divisors is an integer number (20401152).

Almost surely, 2^212535897 is an apocalyptic number.

It is an amenable number.

212535897 is a deficient number, since it is larger than the sum of its proper divisors (113882535).

212535897 is a wasteful number, since it uses less digits than its factorization.

212535897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79828.

The product of its digits is 151200, while the sum is 42.

The square root of 212535897 is about 14578.6109420617. The cubic root of 212535897 is about 596.7751960060.

The spelling of 212535897 in words is "two hundred twelve million, five hundred thirty-five thousand, eight hundred ninety-seven".