616442053 has 2 divisors, whose sum is σ = 616442054. Its totient is φ = 616442052.

The previous prime is 616441997. The next prime is 616442059. The reversal of 616442053 is 350244616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545596164 + 70845889 = 23358^2 + 8417^2 .

It is a cyclic number.

It is not a de Polignac number, because 616442053 - 2²¹ = 614344901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616442059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308221026 + 308221027.

It is an arithmetic number, because the mean of its divisors is an integer number (308221027).

Almost surely, 2^616442053 is an apocalyptic number.

It is an amenable number.

616442053 is a deficient number, since it is larger than the sum of its proper divisors (1).

616442053 is an equidigital number, since it uses as much as digits as its factorization.

616442053 is an evil number, because the sum of its binary digits is even.

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

The square root of 616442053 is about 24828.2511063506. The cubic root of 616442053 is about 851.0676563153.

Adding to 616442053 its reverse (350244616), we get a palindrome (966686669).

The spelling of 616442053 in words is "six hundred sixteen million, four hundred forty-two thousand, fifty-three".