1355555790 has 32 divisors (see below), whose sum is σ = 3614816160. Its totient is φ = 361481472.

The previous prime is 1355555783. The next prime is 1355555813. The reversal of 1355555790 is 975555531.

1355555790 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 5 + 557 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2510019 + ... + 2510558.

It is an arithmetic number, because the mean of its divisors is an integer number (112963005).

Almost surely, 2^1355555790 is an apocalyptic number.

1355555790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1355555790 is an abundant number, since it is smaller than the sum of its proper divisors (2259260370).

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

1355555790 is a wasteful number, since it uses less digits than its factorization.

1355555790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020593 (or 5020587 counting only the distinct ones).

The product of its (nonzero) digits is 590625, while the sum is 45.

The square root of 1355555790 is about 36817.8732411311. The cubic root of 1355555790 is about 1106.7235008351.

The spelling of 1355555790 in words is "one billion, three hundred fifty-five million, five hundred fifty-five thousand, seven hundred ninety".