107561561 has 4 divisors (see below), whose sum is σ = 108605952. Its totient is φ = 106517172.

The previous prime is 107561557. The next prime is 107561563. The reversal of 107561561 is 165165701.

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 107561561 - 2² = 107561557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (107561563) 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, 522041 + ... + 522246.

It is an arithmetic number, because the mean of its divisors is an integer number (27151488).

Almost surely, 2^107561561 is an apocalyptic number.

It is an amenable number.

107561561 is a deficient number, since it is larger than the sum of its proper divisors (1044391).

107561561 is a wasteful number, since it uses less digits than its factorization.

107561561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044390.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 107561561 is about 10371.1889868038. The cubic root of 107561561 is about 475.5750170140.

The spelling of 107561561 in words is "one hundred seven million, five hundred sixty-one thousand, five hundred sixty-one".