516226649 has 2 divisors, whose sum is σ = 516226650. Its totient is φ = 516226648.

The previous prime is 516226639. The next prime is 516226673. The reversal of 516226649 is 946622615.

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., 514972249 + 1254400 = 22693^2 + 1120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516226649 is a prime.

It is not a weakly prime, because it can be changed into another prime (516226619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258113324 + 258113325.

It is an arithmetic number, because the mean of its divisors is an integer number (258113325).

Almost surely, 2^516226649 is an apocalyptic number.

It is an amenable number.

516226649 is a deficient number, since it is larger than the sum of its proper divisors (1).

516226649 is an equidigital number, since it uses as much as digits as its factorization.

516226649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 516226649 is about 22720.6216684315. The cubic root of 516226649 is about 802.1953497262.

The spelling of 516226649 in words is "five hundred sixteen million, two hundred twenty-six thousand, six hundred forty-nine".