1355550 has 48 divisors (see below), whose sum is σ = 3844992. Its totient is φ = 309600.

The previous prime is 1355533. The next prime is 1355573. The reversal of 1355550 is 555531.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405 + ... + 1695.

It is an arithmetic number, because the mean of its divisors is an integer number (80104).

2^1355550 is an apocalyptic number.

1355550 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 1355550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922496).

1355550 is an abundant number, since it is smaller than the sum of its proper divisors (2489442).

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

1355550 is a wasteful number, since it uses less digits than its factorization.

1355550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 1355550 is about 1164.2808939427. The cubic root of 1355550 is about 110.6721925113.

The spelling of 1355550 in words is "one million, three hundred fifty-five thousand, five hundred fifty".