1120551 has 4 divisors (see below), whose sum is σ = 1494072. Its totient is φ = 747032.

The previous prime is 1120549. The next prime is 1120573. The reversal of 1120551 is 1550211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1120551 - 2¹ = 1120549 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186756 + ... + 186761.

It is an arithmetic number, because the mean of its divisors is an integer number (373518).

2^1120551 is an apocalyptic number.

1120551 is a deficient number, since it is larger than the sum of its proper divisors (373521).

1120551 is an equidigital number, since it uses as much as digits as its factorization.

1120551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373520.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1120551 is about 1058.5608154471. The cubic root of 1120551 is about 103.8669093894.

Adding to 1120551 its reverse (1550211), we get a palindrome (2670762).

The spelling of 1120551 in words is "one million, one hundred twenty thousand, five hundred fifty-one".