1355450220 has 96 divisors (see below), whose sum is σ = 4222310400. Its totient is φ = 360994752.

The previous prime is 1355450219. The next prime is 1355450251. The reversal of 1355450220 is 220545531.

It is a happy number.

1355450220 is a `hidden beast` number, since 135 + 5 + 4 + 502 + 20 = 666.

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 31 ways as a sum of consecutive naturals, for example, 769701 + ... + 771459.

It is an arithmetic number, because the mean of its divisors is an integer number (43982400).

Almost surely, 2^1355450220 is an apocalyptic number.

1355450220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355450220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2111155200).

1355450220 is an abundant number, since it is smaller than the sum of its proper divisors (2866860180).

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

1355450220 is a wasteful number, since it uses less digits than its factorization.

1355450220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1355450220 is about 36816.4395345340. The cubic root of 1355450220 is about 1106.6947697336.

Adding to 1355450220 its reverse (220545531), we get a palindrome (1575995751).

The spelling of 1355450220 in words is "one billion, three hundred fifty-five million, four hundred fifty thousand, two hundred twenty".