428177201 has 2 divisors, whose sum is σ = 428177202. Its totient is φ = 428177200.

The previous prime is 428177173. The next prime is 428177203. The reversal of 428177201 is 102771824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413919025 + 14258176 = 20345^2 + 3776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428177201 is a prime.

Together with 428177203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428177203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214088600 + 214088601.

It is an arithmetic number, because the mean of its divisors is an integer number (214088601).

Almost surely, 2^428177201 is an apocalyptic number.

It is an amenable number.

428177201 is a deficient number, since it is larger than the sum of its proper divisors (1).

428177201 is an equidigital number, since it uses as much as digits as its factorization.

428177201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 428177201 is about 20692.4430892053. The cubic root of 428177201 is about 753.7161937558.

The spelling of 428177201 in words is "four hundred twenty-eight million, one hundred seventy-seven thousand, two hundred one".