1355520 has 72 divisors (see below), whose sum is σ = 4341456. Its totient is φ = 360448.

The previous prime is 1355513. The next prime is 1355533. The reversal of 1355520 is 255531.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3664 + ... + 4016.

It is an arithmetic number, because the mean of its divisors is an integer number (60298).

2^1355520 is an apocalyptic number.

1355520 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 1355520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2170728).

1355520 is an abundant number, since it is smaller than the sum of its proper divisors (2985936).

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

1355520 is an equidigital number, since it uses as much as digits as its factorization.

1355520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1355520 is about 1164.2680103825. The cubic root of 1355520 is about 110.6713760677.

The spelling of 1355520 in words is "one million, three hundred fifty-five thousand, five hundred twenty".