212761441 has 4 divisors (see below), whose sum is σ = 212941872. Its totient is φ = 212581012.

The previous prime is 212761397. The next prime is 212761459. The reversal of 212761441 is 144167212.

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 212761441 - 2⁹ = 212760929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212767441) 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, 88435 + ... + 90808.

It is an arithmetic number, because the mean of its divisors is an integer number (53235468).

Almost surely, 2^212761441 is an apocalyptic number.

It is an amenable number.

212761441 is a deficient number, since it is larger than the sum of its proper divisors (180431).

212761441 is a wasteful number, since it uses less digits than its factorization.

212761441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180430.

The product of its digits is 2688, while the sum is 28.

The square root of 212761441 is about 14586.3443329712. The cubic root of 212761441 is about 596.9862215039.

The spelling of 212761441 in words is "two hundred twelve million, seven hundred sixty-one thousand, four hundred forty-one".