1355621256 has 48 divisors (see below), whose sum is σ = 4005246960. Its totient is φ = 410794080.

The previous prime is 1355621231. The next prime is 1355621273. The reversal of 1355621256 is 6521265531.

1355621256 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 621 + 25 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1355621256.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855030 + ... + 856613.

It is an arithmetic number, because the mean of its divisors is an integer number (83442645).

Almost surely, 2^1355621256 is an apocalyptic number.

It is an amenable number.

1355621256 is an abundant number, since it is smaller than the sum of its proper divisors (2649625704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355621256 is a wasteful number, since it uses less digits than its factorization.

1355621256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711666 (or 1711659 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 1355621256 is about 36818.7622822930. The cubic root of 1355621256 is about 1106.7413167979.

Adding to 1355621256 its reverse (6521265531), we get a palindrome (7876886787).

The spelling of 1355621256 in words is "one billion, three hundred fifty-five million, six hundred twenty-one thousand, two hundred fifty-six".