1313550 has 96 divisors (see below), whose sum is σ = 4166400. Its totient is φ = 298080.

The previous prime is 1313467. The next prime is 1313567. The reversal of 1313550 is 553131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9381 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (43400).

2^1313550 is an apocalyptic number.

1313550 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 1313550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2083200).

1313550 is an abundant number, since it is smaller than the sum of its proper divisors (2852850).

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

1313550 is a wasteful number, since it uses less digits than its factorization.

1313550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1313550 is about 1146.1020896936. The cubic root of 1313550 is about 109.5171675091.

Adding to 1313550 its reverse (553131), we get a palindrome (1866681).

The spelling of 1313550 in words is "one million, three hundred thirteen thousand, five hundred fifty".