1155213 has 12 divisors (see below), whose sum is σ = 1704768. Its totient is φ = 753480.

The previous prime is 1155211. The next prime is 1155223. The reversal of 1155213 is 3125511.

It is not a de Polignac number, because 1155213 - 2¹ = 1155211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943 + ... + 1788.

It is an arithmetic number, because the mean of its divisors is an integer number (142064).

2^1155213 is an apocalyptic number.

It is an amenable number.

1155213 is a deficient number, since it is larger than the sum of its proper divisors (549555).

1155213 is a wasteful number, since it uses less digits than its factorization.

1155213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784 (or 2781 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1155213 is about 1074.8083550103. The cubic root of 1155213 is about 104.9270241228.

The spelling of 1155213 in words is "one million, one hundred fifty-five thousand, two hundred thirteen".