1153391 has 8 divisors (see below), whose sum is σ = 1190160. Its totient is φ = 1117312.

The previous prime is 1153367. The next prime is 1153393. The reversal of 1153391 is 1933511.

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 1153391 - 2¹⁰ = 1152367 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 (1153393) 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, 6581 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (148770).

2^1153391 is an apocalyptic number.

1153391 is a deficient number, since it is larger than the sum of its proper divisors (36769).

1153391 is a wasteful number, since it uses less digits than its factorization.

1153391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 405, while the sum is 23.

The square root of 1153391 is about 1073.9604275764. The cubic root of 1153391 is about 104.8718315208.

The spelling of 1153391 in words is "one million, one hundred fifty-three thousand, three hundred ninety-one".