1201550 has 24 divisors (see below), whose sum is σ = 2554896. Its totient is φ = 411840.

The previous prime is 1201531. The next prime is 1201553. The reversal of 1201550 is 551021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1367 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (106454).

2^1201550 is an apocalyptic number.

1201550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201550 is an abundant number, since it is smaller than the sum of its proper divisors (1353346).

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

1201550 is a wasteful number, since it uses less digits than its factorization.

1201550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1201550 is about 1096.1523616724. The cubic root of 1201550 is about 106.3115905881.

Adding to 1201550 its reverse (551021), we get a palindrome (1752571).

The spelling of 1201550 in words is "one million, two hundred one thousand, five hundred fifty".