1157455 has 8 divisors (see below), whose sum is σ = 1495872. Its totient is φ = 854688.

The previous prime is 1157449. The next prime is 1157489. The reversal of 1157455 is 5547511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157455 - 2⁷ = 1157327 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8839 + ... + 8968.

It is an arithmetic number, because the mean of its divisors is an integer number (186984).

2^1157455 is an apocalyptic number.

1157455 is a deficient number, since it is larger than the sum of its proper divisors (338417).

1157455 is a wasteful number, since it uses less digits than its factorization.

1157455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17825.

The product of its digits is 3500, while the sum is 28.

The square root of 1157455 is about 1075.8508260907. The cubic root of 1157455 is about 104.9948599147.

The spelling of 1157455 in words is "one million, one hundred fifty-seven thousand, four hundred fifty-five".