1201554 has 20 divisors (see below), whose sum is σ = 2692734. Its totient is φ = 400464.

The previous prime is 1201553. The next prime is 1201559. The reversal of 1201554 is 4551021.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 342225 = 927^2 + 585^2 .

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

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 9 ways as a sum of consecutive naturals, for example, 3547 + ... + 3870.

2^1201554 is an apocalyptic number.

1201554 is an abundant number, since it is smaller than the sum of its proper divisors (1491180).

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

1201554 is an equidigital number, since it uses as much as digits as its factorization.

1201554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431 (or 7422 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1201554 is about 1096.1541862348. The cubic root of 1201554 is about 106.3117085596.

Adding to 1201554 its reverse (4551021), we get a palindrome (5752575).

The spelling of 1201554 in words is "one million, two hundred one thousand, five hundred fifty-four".