16145777 has 2 divisors, whose sum is σ = 16145778. Its totient is φ = 16145776.

The previous prime is 16145737. The next prime is 16145809. The reversal of 16145777 is 77754161.

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., 12645136 + 3500641 = 3556^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 16145777 - 2⁶ = 16145713 is a prime.

It is a super-2 number, since 2×16145777² = 521372229867458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16145777.

It is not a weakly prime, because it can be changed into another prime (16145737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8072888 + 8072889.

It is an arithmetic number, because the mean of its divisors is an integer number (8072889).

Almost surely, 2^16145777 is an apocalyptic number.

It is an amenable number.

16145777 is a deficient number, since it is larger than the sum of its proper divisors (1).

16145777 is an equidigital number, since it uses as much as digits as its factorization.

16145777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41160, while the sum is 38.

The square root of 16145777 is about 4018.1808072808. The cubic root of 16145777 is about 252.7471787924.

The spelling of 16145777 in words is "sixteen million, one hundred forty-five thousand, seven hundred seventy-seven".