561098 has 4 divisors (see below), whose sum is σ = 841650. Its totient is φ = 280548.

The previous prime is 561097. The next prime is 561101. The reversal of 561098 is 890165.

561098 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.

It can be written as a sum of positive squares in only one way, i.e., 426409 + 134689 = 653^2 + 367^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 561098.

It is not an unprimeable number, because it can be changed into a prime (561091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140273 + ... + 140276.

2⁵⁶¹⁰⁹⁸ is an apocalyptic number.

561098 is a deficient number, since it is larger than the sum of its proper divisors (280552).

561098 is a wasteful number, since it uses less digits than its factorization.

561098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280551.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 561098 is about 749.0647502052. The cubic root of 561098 is about 82.4795419123.

The spelling of 561098 in words is "five hundred sixty-one thousand, ninety-eight".