5216121461 has 2 divisors, whose sum is σ = 5216121462. Its totient is φ = 5216121460.

The previous prime is 5216121457. The next prime is 5216121479. The reversal of 5216121461 is 1641216125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5082834436 + 133287025 = 71294^2 + 11545^2 .

It is a cyclic number.

It is not a de Polignac number, because 5216121461 - 2² = 5216121457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5216121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2608060730 + 2608060731.

It is an arithmetic number, because the mean of its divisors is an integer number (2608060731).

Almost surely, 2^5216121461 is an apocalyptic number.

It is an amenable number.

5216121461 is a deficient number, since it is larger than the sum of its proper divisors (1).

5216121461 is an equidigital number, since it uses as much as digits as its factorization.

5216121461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 5216121461 is about 72222.7212240026. The cubic root of 5216121461 is about 1734.2667533626.

Adding to 5216121461 its reverse (1641216125), we get a palindrome (6857337586).

The spelling of 5216121461 in words is "five billion, two hundred sixteen million, one hundred twenty-one thousand, four hundred sixty-one".