1125651 has 8 divisors (see below), whose sum is σ = 1541584. Its totient is φ = 730080.

The previous prime is 1125647. The next prime is 1125653. The reversal of 1125651 is 1565211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125651 - 2² = 1125647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125653) 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, 4960 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (192698).

2^1125651 is an apocalyptic number.

1125651 is a deficient number, since it is larger than the sum of its proper divisors (415933).

1125651 is a wasteful number, since it uses less digits than its factorization.

1125651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181.

The product of its digits is 300, while the sum is 21.

The square root of 1125651 is about 1060.9670117398. The cubic root of 1125651 is about 104.0242485371.

It can be divided in two parts, 11256 and 51, that multiplied together give a triangular number (574056 = T₁₀₇₁).

The spelling of 1125651 in words is "one million, one hundred twenty-five thousand, six hundred fifty-one".