1158455 has 8 divisors (see below), whose sum is σ = 1424304. Its totient is φ = 904000.

The previous prime is 1158427. The next prime is 1158457. The reversal of 1158455 is 5548511.

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

It is not a de Polignac number, because 1158455 - 2¹² = 1154359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2621 + ... + 3030.

It is an arithmetic number, because the mean of its divisors is an integer number (178038).

2^1158455 is an apocalyptic number.

1158455 is a deficient number, since it is larger than the sum of its proper divisors (265849).

1158455 is an equidigital number, since it uses as much as digits as its factorization.

1158455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697.

The product of its digits is 4000, while the sum is 29.

The square root of 1158455 is about 1076.3154741989. The cubic root of 1158455 is about 105.0250884872.

The spelling of 1158455 in words is "one million, one hundred fifty-eight thousand, four hundred fifty-five".