1355604461 has 4 divisors (see below), whose sum is σ = 1355724252. Its totient is φ = 1355484672.

The previous prime is 1355604407. The next prime is 1355604469. The reversal of 1355604461 is 1644065531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1644065531 = 397 ⋅4141223.

It can be written as a sum of positive squares in 2 ways, for example, as 457703236 + 897901225 = 21394^2 + 29965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355604461 - 2²² = 1351410157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355604469) 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, 40916 + ... + 66221.

It is an arithmetic number, because the mean of its divisors is an integer number (338931063).

Almost surely, 2^1355604461 is an apocalyptic number.

It is an amenable number.

1355604461 is a deficient number, since it is larger than the sum of its proper divisors (119791).

1355604461 is a wasteful number, since it uses less digits than its factorization.

1355604461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119790.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1355604461 is about 36818.5342049354. The cubic root of 1355604461 is about 1106.7367462496.

Adding to 1355604461 its reverse (1644065531), we get a palindrome (2999669992).

The spelling of 1355604461 in words is "one billion, three hundred fifty-five million, six hundred four thousand, four hundred sixty-one".