1045845 has 32 divisors (see below), whose sum is σ = 1904640. Its totient is φ = 544320.

The previous prime is 1045841. The next prime is 1045859. The reversal of 1045845 is 5485401.

It is not a de Polignac number, because 1045845 - 2² = 1045841 is a prime.

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

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8172 + ... + 8298.

It is an arithmetic number, because the mean of its divisors is an integer number (59520).

2^1045845 is an apocalyptic number.

1045845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045845 is a deficient number, since it is larger than the sum of its proper divisors (858795).

1045845 is a wasteful number, since it uses less digits than its factorization.

1045845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1045845 is about 1022.6656345062. The cubic root of 1045845 is about 101.5053909308.

The spelling of 1045845 in words is "one million, forty-five thousand, eight hundred forty-five".