1154455 has 4 divisors (see below), whose sum is σ = 1385352. Its totient is φ = 923560.

The previous prime is 1154449. The next prime is 1154467. The reversal of 1154455 is 5544511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5544511 = 7 ⋅792073.

It is not a de Polignac number, because 1154455 - 2⁷ = 1154327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115441 + ... + 115450.

It is an arithmetic number, because the mean of its divisors is an integer number (346338).

2^1154455 is an apocalyptic number.

1154455 is a deficient number, since it is larger than the sum of its proper divisors (230897).

1154455 is an equidigital number, since it uses as much as digits as its factorization.

1154455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230896.

The product of its digits is 2000, while the sum is 25.

The square root of 1154455 is about 1074.4556761449. The cubic root of 1154455 is about 104.9040696009.

Adding to 1154455 its reverse (5544511), we get a palindrome (6698966).

The spelling of 1154455 in words is "one million, one hundred fifty-four thousand, four hundred fifty-five".