212457473 has 4 divisors (see below), whose sum is σ = 213140928. Its totient is φ = 211774020.

The previous prime is 212457467. The next prime is 212457491. The reversal of 212457473 is 374754212.

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 not a de Polignac number, because 212457473 - 2⁴ = 212457457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212457403) 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 3 ways as a sum of consecutive naturals, for example, 341261 + ... + 341882.

It is an arithmetic number, because the mean of its divisors is an integer number (53285232).

Almost surely, 2^212457473 is an apocalyptic number.

It is an amenable number.

212457473 is a deficient number, since it is larger than the sum of its proper divisors (683455).

212457473 is an equidigital number, since it uses as much as digits as its factorization.

212457473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683454.

The product of its digits is 47040, while the sum is 35.

The square root of 212457473 is about 14575.9210000603. The cubic root of 212457473 is about 596.7017852610.

The spelling of 212457473 in words is "two hundred twelve million, four hundred fifty-seven thousand, four hundred seventy-three".