212549997 has 32 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 120625920.

The previous prime is 212549983. The next prime is 212550001. The reversal of 212549997 is 799945212.

212549997 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 212549997 - 2¹¹ = 212547949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212549927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124254 + ... + 125952.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^212549997 is an apocalyptic number.

It is an amenable number.

212549997 is a deficient number, since it is larger than the sum of its proper divisors (116461203).

212549997 is a wasteful number, since it uses less digits than its factorization.

212549997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its digits is 408240, while the sum is 48.

The square root of 212549997 is about 14579.0945192080. The cubic root of 212549997 is about 596.7883927480.

The spelling of 212549997 in words is "two hundred twelve million, five hundred forty-nine thousand, nine hundred ninety-seven".