424715561 has 2 divisors, whose sum is σ = 424715562. Its totient is φ = 424715560.

The previous prime is 424715509. The next prime is 424715587. The reversal of 424715561 is 165517424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351937600 + 72777961 = 18760^2 + 8531^2 .

It is a cyclic number.

It is not a de Polignac number, because 424715561 - 2⁶ = 424715497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424715591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212357780 + 212357781.

It is an arithmetic number, because the mean of its divisors is an integer number (212357781).

Almost surely, 2^424715561 is an apocalyptic number.

It is an amenable number.

424715561 is a deficient number, since it is larger than the sum of its proper divisors (1).

424715561 is an equidigital number, since it uses as much as digits as its factorization.

424715561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 35.

The square root of 424715561 is about 20608.6283143736. The cubic root of 424715561 is about 751.6795314985.

The spelling of 424715561 in words is "four hundred twenty-four million, seven hundred fifteen thousand, five hundred sixty-one".