1154551 has 2 divisors, whose sum is σ = 1154552. Its totient is φ = 1154550.

The previous prime is 1154539. The next prime is 1154561. The reversal of 1154551 is 1554511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1154551 - 2⁹ = 1154039 is a prime.

It is a Chen prime.

It is the 1075-th Hogben number.

1154551 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154561) by changing a digit.

It is a nontrivial repunit in base 1074.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577275 + 577276.

It is an arithmetic number, because the mean of its divisors is an integer number (577276).

2^1154551 is an apocalyptic number.

1154551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154551 is an equidigital number, since it uses as much as digits as its factorization.

1154551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500, while the sum is 22.

The square root of 1154551 is about 1074.5003489995. The cubic root of 1154551 is about 104.9069773255.

The spelling of 1154551 in words is "one million, one hundred fifty-four thousand, five hundred fifty-one".