119561 has 8 divisors (see below), whose sum is σ = 136584. Its totient is φ = 103680.

The previous prime is 119557. The next prime is 119563. The reversal of 119561 is 165911.

119561 = T₁₁₀ + T₁₁₁ + ... + T₁₂₆.

119561 = 244² + 245².

It can be written as a sum of positive squares in 4 ways, for example, as 10000 + 109561 = 100^2 + 331^2 .

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 119561 - 2² = 119557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (119563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 491.

It is an arithmetic number, because the mean of its divisors is an integer number (17073).

2¹¹⁹⁵⁶¹ is an apocalyptic number.

119561 is the 245-th centered square number.

It is an amenable number.

119561 is a deficient number, since it is larger than the sum of its proper divisors (17023).

119561 is a wasteful number, since it uses less digits than its factorization.

119561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its digits is 270, while the sum is 23.

The square root of 119561 is about 345.7759390125. The cubic root of 119561 is about 49.2640198176.

The spelling of 119561 in words is "one hundred nineteen thousand, five hundred sixty-one".