424698557 has 2 divisors, whose sum is σ = 424698558. Its totient is φ = 424698556.

The previous prime is 424698551. The next prime is 424698559. The reversal of 424698557 is 755896424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402363481 + 22335076 = 20059^2 + 4726^2 .

It is a cyclic number.

It is not a de Polignac number, because 424698557 - 2²⁶ = 357589693 is a prime.

Together with 424698559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424698551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212349278 + 212349279.

It is an arithmetic number, because the mean of its divisors is an integer number (212349279).

Almost surely, 2^424698557 is an apocalyptic number.

It is an amenable number.

424698557 is a deficient number, since it is larger than the sum of its proper divisors (1).

424698557 is an equidigital number, since it uses as much as digits as its factorization.

424698557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 50.

The square root of 424698557 is about 20608.2157645925. The cubic root of 424698557 is about 751.6694998989.

The spelling of 424698557 in words is "four hundred twenty-four million, six hundred ninety-eight thousand, five hundred fifty-seven".