23277145 has 8 divisors (see below), whose sum is σ = 28315656. Its totient is φ = 18366336.

The previous prime is 23277091. The next prime is 23277157. The reversal of 23277145 is 54177232.

It can be written as a sum of positive squares in 4 ways, for example, as 121801 + 23155344 = 349^2 + 4812^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23277145 - 2¹⁹ = 22752857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31522 + ... + 32251.

It is an arithmetic number, because the mean of its divisors is an integer number (3539457).

Almost surely, 2^23277145 is an apocalyptic number.

It is an amenable number.

23277145 is a deficient number, since it is larger than the sum of its proper divisors (5038511).

23277145 is an equidigital number, since it uses as much as digits as its factorization.

23277145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63851.

The product of its digits is 11760, while the sum is 31.

The square root of 23277145 is about 4824.6393647609. The cubic root of 23277145 is about 285.5244063979.

It can be divided in two parts, 232 and 77145, that added together give a palindrome (77377).

The spelling of 23277145 in words is "twenty-three million, two hundred seventy-seven thousand, one hundred forty-five".