212502461 has 2 divisors, whose sum is σ = 212502462. Its totient is φ = 212502460.

The previous prime is 212502449. The next prime is 212502487. The reversal of 212502461 is 164205212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180364900 + 32137561 = 13430^2 + 5669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212502461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212502421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106251230 + 106251231.

It is an arithmetic number, because the mean of its divisors is an integer number (106251231).

Almost surely, 2^212502461 is an apocalyptic number.

It is an amenable number.

212502461 is a deficient number, since it is larger than the sum of its proper divisors (1).

212502461 is an equidigital number, since it uses as much as digits as its factorization.

212502461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 212502461 is about 14577.4641484725. The cubic root of 212502461 is about 596.7438996114.

Adding to 212502461 its reverse (164205212), we get a palindrome (376707673).

The spelling of 212502461 in words is "two hundred twelve million, five hundred two thousand, four hundred sixty-one".