1170551 has 4 divisors (see below), whose sum is σ = 1181400. Its totient is φ = 1159704.

The previous prime is 1170541. The next prime is 1170553. The reversal of 1170551 is 1550711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1550711 = 71 ⋅21841.

It is a cyclic number.

It is not a de Polignac number, because 1170551 - 2⁶ = 1170487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261 + ... + 5478.

It is an arithmetic number, because the mean of its divisors is an integer number (295350).

2^1170551 is an apocalyptic number.

1170551 is a deficient number, since it is larger than the sum of its proper divisors (10849).

1170551 is a wasteful number, since it uses less digits than its factorization.

1170551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 1170551 is about 1081.9200524993. The cubic root of 1170551 is about 105.3893631389.

The spelling of 1170551 in words is "one million, one hundred seventy thousand, five hundred fifty-one".