12277481 has 4 divisors (see below), whose sum is σ = 12538752. Its totient is φ = 12016212.

The previous prime is 12277427. The next prime is 12277483. The reversal of 12277481 is 18477221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12277481 is a prime.

It is a super-2 number, since 2×12277481² = 301473079410722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12277483) 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, 130565 + ... + 130658.

It is an arithmetic number, because the mean of its divisors is an integer number (3134688).

Almost surely, 2^12277481 is an apocalyptic number.

It is an amenable number.

12277481 is a deficient number, since it is larger than the sum of its proper divisors (261271).

12277481 is an equidigital number, since it uses as much as digits as its factorization.

12277481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261270.

The product of its digits is 6272, while the sum is 32.

The square root of 12277481 is about 3503.9236578442. The cubic root of 12277481 is about 230.6940659962.

The spelling of 12277481 in words is "twelve million, two hundred seventy-seven thousand, four hundred eighty-one".