1092561 has 4 divisors (see below), whose sum is σ = 1456752. Its totient is φ = 728372.

The previous prime is 1092541. The next prime is 1092583. The reversal of 1092561 is 1652901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1092561 - 2⁷ = 1092433 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1092541) 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, 182091 + ... + 182096.

It is an arithmetic number, because the mean of its divisors is an integer number (364188).

2^1092561 is an apocalyptic number.

It is an amenable number.

1092561 is a deficient number, since it is larger than the sum of its proper divisors (364191).

1092561 is an equidigital number, since it uses as much as digits as its factorization.

1092561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364190.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1092561 is about 1045.2564278683. The cubic root of 1092561 is about 102.9947840385.

It can be divided in two parts, 1092 and 561, that added together give a triangular number (1653 = T₅₇).

The spelling of 1092561 in words is "one million, ninety-two thousand, five hundred sixty-one".