616522243 has 2 divisors, whose sum is σ = 616522244. Its totient is φ = 616522242.

The previous prime is 616522213. The next prime is 616522253. The reversal of 616522243 is 342225616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616522243 - 2²⁵ = 582967811 is a prime.

It is a super-2 number, since 2×616522243² = 760199352227502098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (616522213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308261121 + 308261122.

It is an arithmetic number, because the mean of its divisors is an integer number (308261122).

Almost surely, 2^616522243 is an apocalyptic number.

616522243 is a deficient number, since it is larger than the sum of its proper divisors (1).

616522243 is an equidigital number, since it uses as much as digits as its factorization.

616522243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 616522243 is about 24829.8659480876. The cubic root of 616522243 is about 851.1045584896.

Adding to 616522243 its reverse (342225616), we get a palindrome (958747859).

The spelling of 616522243 in words is "six hundred sixteen million, five hundred twenty-two thousand, two hundred forty-three".