1081024561 has 8 divisors (see below), whose sum is σ = 1118946600. Its totient is φ = 1043145600.

The previous prime is 1081024547. The next prime is 1081024579. The reversal of 1081024561 is 1654201801.

It can be written as a sum of positive squares in 4 ways, for example, as 276224400 + 804800161 = 16620^2 + 28369^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1081024561 - 2¹³ = 1081016369 is a prime.

It is a super-2 number, since 2×1081024561² = 2337228202970485442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081024501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45325 + ... + 64933.

It is an arithmetic number, because the mean of its divisors is an integer number (139868325).

Almost surely, 2^1081024561 is an apocalyptic number.

It is an amenable number.

1081024561 is a deficient number, since it is larger than the sum of its proper divisors (37922039).

1081024561 is a wasteful number, since it uses less digits than its factorization.

1081024561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21539.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1081024561 is about 32878.9379542588. The cubic root of 1081024561 is about 1026.3099052178.

The spelling of 1081024561 in words is "one billion, eighty-one million, twenty-four thousand, five hundred sixty-one".