16020457 has 2 divisors, whose sum is σ = 16020458. Its totient is φ = 16020456.

The previous prime is 16020449. The next prime is 16020461. The reversal of 16020457 is 75402061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 52441 = 3996^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 16020457 - 2³ = 16020449 is a prime.

It is not a weakly prime, because it can be changed into another prime (16020157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8010228 + 8010229.

It is an arithmetic number, because the mean of its divisors is an integer number (8010229).

Almost surely, 2^16020457 is an apocalyptic number.

It is an amenable number.

16020457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16020457 is an equidigital number, since it uses as much as digits as its factorization.

16020457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 16020457 is about 4002.5563081611. The cubic root of 16020457 is about 252.0915567626.

The spelling of 16020457 in words is "sixteen million, twenty thousand, four hundred fifty-seven".