1090451 has 4 divisors (see below), whose sum is σ = 1094952. Its totient is φ = 1085952.

The previous prime is 1090423. The next prime is 1090457. The reversal of 1090451 is 1540901.

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

It is a cyclic number.

It is not a de Polignac number, because 1090451 - 2⁶ = 1090387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (273738).

2^1090451 is an apocalyptic number.

1090451 is a deficient number, since it is larger than the sum of its proper divisors (4501).

1090451 is an equidigital number, since it uses as much as digits as its factorization.

1090451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1090451 is about 1044.2466183809. The cubic root of 1090451 is about 102.9284386832.

The spelling of 1090451 in words is "one million, ninety thousand, four hundred fifty-one".