212523445 has 8 divisors (see below), whose sum is σ = 263255040. Its totient is φ = 164534160.

The previous prime is 212523439. The next prime is 212523463. The reversal of 212523445 is 544325212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212523445 - 2⁵ = 212523413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685405 + ... + 685714.

It is an arithmetic number, because the mean of its divisors is an integer number (32906880).

Almost surely, 2^212523445 is an apocalyptic number.

It is an amenable number.

212523445 is a deficient number, since it is larger than the sum of its proper divisors (50731595).

212523445 is a wasteful number, since it uses less digits than its factorization.

212523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371155.

The product of its digits is 9600, while the sum is 28.

The square root of 212523445 is about 14578.1838717997. The cubic root of 212523445 is about 596.7635412064.

Adding to 212523445 its reverse (544325212), we get a palindrome (756848657).

The spelling of 212523445 in words is "two hundred twelve million, five hundred twenty-three thousand, four hundred forty-five".