1155772 has 12 divisors (see below), whose sum is σ = 2031736. Its totient is φ = 575280.

The previous prime is 1155733. The next prime is 1155821. The reversal of 1155772 is 2775511.

It is a super-3 number, since 3×1155772³ = 4631671627333978944, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622 + ... + 1642.

2^1155772 is an apocalyptic number.

It is an amenable number.

1155772 is a deficient number, since it is larger than the sum of its proper divisors (875964).

1155772 is a wasteful number, since it uses less digits than its factorization.

1155772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1306 counting only the distinct ones).

The product of its digits is 2450, while the sum is 28.

The square root of 1155772 is about 1075.0683699189. The cubic root of 1155772 is about 104.9439458935.

The spelling of 1155772 in words is "one million, one hundred fifty-five thousand, seven hundred seventy-two".