1356775457 has 8 divisors (see below), whose sum is σ = 1444525992. Its totient is φ = 1269907200.

The previous prime is 1356775439. The next prime is 1356775463. The reversal of 1356775457 is 7545776531.

It can be written as a sum of positive squares in 4 ways, for example, as 224520256 + 1132255201 = 14984^2 + 33649^2 .

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 1356775457 - 2¹⁴ = 1356759073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356775487) 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, 217394 + ... + 223547.

It is an arithmetic number, because the mean of its divisors is an integer number (180565749).

Almost surely, 2^1356775457 is an apocalyptic number.

1356775457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1356775457 is a deficient number, since it is larger than the sum of its proper divisors (87750535).

1356775457 is a wasteful number, since it uses less digits than its factorization.

1356775457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441139.

The product of its digits is 3087000, while the sum is 50.

The square root of 1356775457 is about 36834.4330348656. The cubic root of 1356775457 is about 1107.0553277027.

The spelling of 1356775457 in words is "one billion, three hundred fifty-six million, seven hundred seventy-five thousand, four hundred fifty-seven".