1146555 has 40 divisors (see below), whose sum is σ = 2178000. Its totient is φ = 575424.

The previous prime is 1146539. The next prime is 1146559. The reversal of 1146555 is 5556411.

It is a happy number.

1146555 is a `hidden beast` number, since 1 + 1 + 4 + 655 + 5 = 666.

It is not a de Polignac number, because 1146555 - 2⁴ = 1146539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1146559) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7621 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (54450).

2^1146555 is an apocalyptic number.

1146555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1146555 is a deficient number, since it is larger than the sum of its proper divisors (1031445).

1146555 is a wasteful number, since it uses less digits than its factorization.

1146555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 176 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 1146555 is about 1070.7730852053. The cubic root of 1146555 is about 104.6642335612.

The spelling of 1146555 in words is "one million, one hundred forty-six thousand, five hundred fifty-five".