1144555477 has 8 divisors (see below), whose sum is σ = 1245306776. Its totient is φ = 1045619712.

The previous prime is 1144555409. The next prime is 1144555483. The reversal of 1144555477 is 7745554411.

It can be written as a sum of positive squares in 4 ways, for example, as 240591121 + 903964356 = 15511^2 + 30066^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144555477 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 (1144559477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452568 + ... + 455089.

It is an arithmetic number, because the mean of its divisors is an integer number (155663347).

Almost surely, 2^1144555477 is an apocalyptic number.

It is an amenable number.

1144555477 is a deficient number, since it is larger than the sum of its proper divisors (100751299).

1144555477 is an equidigital number, since it uses as much as digits as its factorization.

1144555477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907767.

The product of its digits is 392000, while the sum is 43.

The square root of 1144555477 is about 33831.2795649233. The cubic root of 1144555477 is about 1046.0335544759.

The spelling of 1144555477 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, four hundred seventy-seven".