1355777481 has 8 divisors (see below), whose sum is σ = 1886299200. Its totient is φ = 864553712.

The previous prime is 1355777459. The next prime is 1355777491. The reversal of 1355777481 is 1847775531.

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 1355777481 - 2⁹ = 1355776969 is a prime.

It is a super-2 number, since 2×1355777481² = 3676265155973410722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1355777481.

It is not an unprimeable number, because it can be changed into a prime (1355777431) 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, 9824406 + ... + 9824543.

It is an arithmetic number, because the mean of its divisors is an integer number (235787400).

Almost surely, 2^1355777481 is an apocalyptic number.

It is an amenable number.

1355777481 is a deficient number, since it is larger than the sum of its proper divisors (530521719).

1355777481 is a wasteful number, since it uses less digits than its factorization.

1355777481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19648975.

The product of its digits is 823200, while the sum is 48.

The square root of 1355777481 is about 36820.8837618002. The cubic root of 1355777481 is about 1106.7838296605.

The spelling of 1355777481 in words is "one billion, three hundred fifty-five million, seven hundred seventy-seven thousand, four hundred eighty-one".