16377457 has 2 divisors, whose sum is σ = 16377458. Its totient is φ = 16377456.

The previous prime is 16377433. The next prime is 16377461. The reversal of 16377457 is 75477361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 4260096 = 3481^2 + 2064^2 .

It is an emirp because it is prime and its reverse (75477361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16377457 - 2⁷ = 16377329 is a prime.

It is not a weakly prime, because it can be changed into another prime (16377497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8188728 + 8188729.

It is an arithmetic number, because the mean of its divisors is an integer number (8188729).

Almost surely, 2^16377457 is an apocalyptic number.

It is an amenable number.

16377457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16377457 is an equidigital number, since it uses as much as digits as its factorization.

16377457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 40.

The square root of 16377457 is about 4046.9070906064. The cubic root of 16377457 is about 253.9503540311.

The spelling of 16377457 in words is "sixteen million, three hundred seventy-seven thousand, four hundred fifty-seven".