12277445 has 6 divisors (see below), whose sum is σ = 14742342. Its totient is φ = 9815688.

The previous prime is 12277427. The next prime is 12277483. The reversal of 12277445 is 54477221.

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 2455489 = 3134^2 + 1567^2 .

It is not a de Polignac number, because 12277445 - 2⁶ = 12277381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7052 + ... + 8618.

It is an arithmetic number, because the mean of its divisors is an integer number (2457057).

Almost surely, 2^12277445 is an apocalyptic number.

It is an amenable number.

12277445 is a deficient number, since it is larger than the sum of its proper divisors (2464897).

12277445 is an frugal number, since it uses more digits than its factorization.

12277445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 1572 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 12277445 is about 3503.9185207422. The cubic root of 12277445 is about 230.6938405158.

Multiplying 12277445 by its product of digits (15680), we get a square (192510337600 = 438760²).

The spelling of 12277445 in words is "twelve million, two hundred seventy-seven thousand, four hundred forty-five".