428293553 has 2 divisors, whose sum is σ = 428293554. Its totient is φ = 428293552.

The previous prime is 428293507. The next prime is 428293561. The reversal of 428293553 is 355392824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428158864 + 134689 = 20692^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 428293553 - 2⁸ = 428293297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 428293553.

It is not a weakly prime, because it can be changed into another prime (428293153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214146776 + 214146777.

It is an arithmetic number, because the mean of its divisors is an integer number (214146777).

Almost surely, 2^428293553 is an apocalyptic number.

It is an amenable number.

428293553 is a deficient number, since it is larger than the sum of its proper divisors (1).

428293553 is an equidigital number, since it uses as much as digits as its factorization.

428293553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The square root of 428293553 is about 20695.2543593936. The cubic root of 428293553 is about 753.7844586736.

The spelling of 428293553 in words is "four hundred twenty-eight million, two hundred ninety-three thousand, five hundred fifty-three".