1227405455 has 4 divisors (see below), whose sum is σ = 1472886552. Its totient is φ = 981924360.

The previous prime is 1227405451. The next prime is 1227405467. The reversal of 1227405455 is 5545047221.

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

It is not a de Polignac number, because 1227405455 - 2² = 1227405451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227405451) 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, 122740541 + ... + 122740550.

It is an arithmetic number, because the mean of its divisors is an integer number (368221638).

Almost surely, 2^1227405455 is an apocalyptic number.

1227405455 is a deficient number, since it is larger than the sum of its proper divisors (245481097).

1227405455 is an equidigital number, since it uses as much as digits as its factorization.

1227405455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245481096.

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 1227405455 is about 35034.3467899717. The cubic root of 1227405455 is about 1070.6873782240.

The spelling of 1227405455 in words is "one billion, two hundred twenty-seven million, four hundred five thousand, four hundred fifty-five".