200238457 has 2 divisors, whose sum is σ = 200238458. Its totient is φ = 200238456.

The previous prime is 200238449. The next prime is 200238481. The reversal of 200238457 is 754832002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176996416 + 23242041 = 13304^2 + 4821^2 .

It is a cyclic number.

It is not a de Polignac number, because 200238457 - 2³ = 200238449 is a prime.

It is not a weakly prime, because it can be changed into another prime (200238557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100119228 + 100119229.

It is an arithmetic number, because the mean of its divisors is an integer number (100119229).

Almost surely, 2^200238457 is an apocalyptic number.

It is an amenable number.

200238457 is a deficient number, since it is larger than the sum of its proper divisors (1).

200238457 is an equidigital number, since it uses as much as digits as its factorization.

200238457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 200238457 is about 14150.5638403563. The cubic root of 200238457 is about 585.0358728337.

The spelling of 200238457 in words is "two hundred million, two hundred thirty-eight thousand, four hundred fifty-seven".