561358 has 16 divisors (see below), whose sum is σ = 974304. Its totient is φ = 237600.

The previous prime is 561347. The next prime is 561359. The reversal of 561358 is 853165.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561359) 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, 1216 + ... + 1612.

It is an arithmetic number, because the mean of its divisors is an integer number (60894).

2⁵⁶¹³⁵⁸ is an apocalyptic number.

561358 is a deficient number, since it is larger than the sum of its proper divisors (412946).

561358 is a wasteful number, since it uses less digits than its factorization.

561358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 3600, while the sum is 28.

The square root of 561358 is about 749.2382798549. The cubic root of 561358 is about 82.4922796571.

It can be divided in two parts, 5613 and 58, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 561358 in words is "five hundred sixty-one thousand, three hundred fifty-eight".