1055532561 has 4 divisors (see below), whose sum is σ = 1407376752. Its totient is φ = 703688372.

The previous prime is 1055532503. The next prime is 1055532571. The reversal of 1055532561 is 1652355501.

1055532561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-1055532561 is a prime.

It is a super-2 number, since 2×1055532561² = 2228297974662437442, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1055532571) 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, 175922091 + ... + 175922096.

It is an arithmetic number, because the mean of its divisors is an integer number (351844188).

Almost surely, 2^1055532561 is an apocalyptic number.

It is an amenable number.

1055532561 is a deficient number, since it is larger than the sum of its proper divisors (351844191).

1055532561 is an equidigital number, since it uses as much as digits as its factorization.

1055532561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351844190.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1055532561 is about 32488.9606020260. The cubic root of 1055532561 is about 1018.1783971676.

The spelling of 1055532561 in words is "one billion, fifty-five million, five hundred thirty-two thousand, five hundred sixty-one".