105452561 has 4 divisors (see below), whose sum is σ = 105667824. Its totient is φ = 105237300.

The previous prime is 105452549. The next prime is 105452587. The reversal of 105452561 is 165254501.

It is a happy number.

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-105452561 is a prime.

It is a super-2 number, since 2×105452561² = 22240485242917442, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105452461) 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, 106895 + ... + 107876.

It is an arithmetic number, because the mean of its divisors is an integer number (26416956).

Almost surely, 2^105452561 is an apocalyptic number.

It is an amenable number.

105452561 is a deficient number, since it is larger than the sum of its proper divisors (215263).

105452561 is an equidigital number, since it uses as much as digits as its factorization.

105452561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215262.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 105452561 is about 10269.0097380419. The cubic root of 105452561 is about 472.4462184151.

The spelling of 105452561 in words is "one hundred five million, four hundred fifty-two thousand, five hundred sixty-one".