561250 has 20 divisors (see below), whose sum is σ = 1054350. Its totient is φ = 224000.

The previous prime is 561229. The next prime is 561251. The reversal of 561250 is 52165.

It is a happy number.

561250 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 5 ways, for example, as 15129 + 546121 = 123^2 + 739^2 .

It is an Ulam number.

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

It is not an unprimeable number, because it can be changed into a prime (561251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1026 + ... + 1474.

2⁵⁶¹²⁵⁰ is an apocalyptic number.

561250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561250 is a deficient number, since it is larger than the sum of its proper divisors (493100).

561250 is an equidigital number, since it uses as much as digits as its factorization.

561250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 561250 is about 749.1662031886. The cubic root of 561250 is about 82.4869890715.

The spelling of 561250 in words is "five hundred sixty-one thousand, two hundred fifty".