212475641 has 4 divisors (see below), whose sum is σ = 242829312. Its totient is φ = 182121972.

The previous prime is 212475631. The next prime is 212475649. The reversal of 212475641 is 146574212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212475641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212475598 and 212475607.

It is not an unprimeable number, because it can be changed into a prime (212475649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15176825 + ... + 15176838.

It is an arithmetic number, because the mean of its divisors is an integer number (60707328).

Almost surely, 2^212475641 is an apocalyptic number.

It is an amenable number.

212475641 is a deficient number, since it is larger than the sum of its proper divisors (30353671).

212475641 is an equidigital number, since it uses as much as digits as its factorization.

212475641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30353670.

The product of its digits is 13440, while the sum is 32.

The square root of 212475641 is about 14576.5442063611. The cubic root of 212475641 is about 596.7187934790.

The spelling of 212475641 in words is "two hundred twelve million, four hundred seventy-five thousand, six hundred forty-one".