1355312250 has 320 divisors, whose sum is σ = 4175069184. Its totient is φ = 326592000.

The previous prime is 1355312243. The next prime is 1355312263. The reversal of 1355312250 is 522135531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 10671687 + ... + 10671813.

Almost surely, 2^1355312250 is an apocalyptic number.

1355312250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355312250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2087534592).

1355312250 is an abundant number, since it is smaller than the sum of its proper divisors (2819756934).

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

1355312250 is a wasteful number, since it uses less digits than its factorization.

1355312250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1355312250 is about 36814.5657315145. The cubic root of 1355312250 is about 1106.6572186537.

Adding to 1355312250 its reverse (522135531), we get a palindrome (1877447781).

The spelling of 1355312250 in words is "one billion, three hundred fifty-five million, three hundred twelve thousand, two hundred fifty".