1355257743 has 8 divisors (see below), whose sum is σ = 2065154688. Its totient is φ = 774432984.

The previous prime is 1355257741. The next prime is 1355257759. The reversal of 1355257743 is 3477525531.

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

It is not a de Polignac number, because 1355257743 - 2¹ = 1355257741 is a prime.

It is a super-2 number, since 2×1355257743² = 3673447099922908098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1355257695 and 1355257704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355257741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32268021 + ... + 32268062.

It is an arithmetic number, because the mean of its divisors is an integer number (258144336).

Almost surely, 2^1355257743 is an apocalyptic number.

1355257743 is a deficient number, since it is larger than the sum of its proper divisors (709896945).

1355257743 is an equidigital number, since it uses as much as digits as its factorization.

1355257743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64536093.

The product of its digits is 441000, while the sum is 42.

The square root of 1355257743 is about 36813.8254328452. The cubic root of 1355257743 is about 1106.6423828662.

The spelling of 1355257743 in words is "one billion, three hundred fifty-five million, two hundred fifty-seven thousand, seven hundred forty-three".