16253977 has 4 divisors (see below), whose sum is σ = 16300900. Its totient is φ = 16207056.

The previous prime is 16253933. The next prime is 16253983. The reversal of 16253977 is 77935261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4447881 + 11806096 = 2109^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 16253977 - 2⁷ = 16253849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16254977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22938 + ... + 23635.

It is an arithmetic number, because the mean of its divisors is an integer number (4075225).

Almost surely, 2^16253977 is an apocalyptic number.

It is an amenable number.

16253977 is a deficient number, since it is larger than the sum of its proper divisors (46923).

16253977 is an equidigital number, since it uses as much as digits as its factorization.

16253977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46922.

The product of its digits is 79380, while the sum is 40.

The square root of 16253977 is about 4031.6221301109. The cubic root of 16253977 is about 253.3105125257.

The spelling of 16253977 in words is "sixteen million, two hundred fifty-three thousand, nine hundred seventy-seven".