1151945 has 4 divisors (see below), whose sum is σ = 1382340. Its totient is φ = 921552.

The previous prime is 1151933. The next prime is 1151963. The reversal of 1151945 is 5491511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 537289 + 614656 = 733^2 + 784^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151945 - 2⁶ = 1151881 is a prime.

It is an Ulam 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, 115190 + ... + 115199.

It is an arithmetic number, because the mean of its divisors is an integer number (345585).

2^1151945 is an apocalyptic number.

It is an amenable number.

1151945 is a deficient number, since it is larger than the sum of its proper divisors (230395).

1151945 is an equidigital number, since it uses as much as digits as its factorization.

1151945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230394.

The product of its digits is 900, while the sum is 26.

The square root of 1151945 is about 1073.2870072818. The cubic root of 1151945 is about 104.8279874458.

The spelling of 1151945 in words is "one million, one hundred fifty-one thousand, nine hundred forty-five".