1561060 has 24 divisors (see below), whose sum is σ = 3318840. Its totient is φ = 616704.

The previous prime is 1561039. The next prime is 1561069. The reversal of 1561060 is 601651.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 1382976 = 422^2 + 1176^2 .

It is not an unprimeable number, because it can be changed into a prime (1561069) 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, 1342 + ... + 2218.

It is an arithmetic number, because the mean of its divisors is an integer number (138285).

2^1561060 is an apocalyptic number.

1561060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561060 is an abundant number, since it is smaller than the sum of its proper divisors (1757780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561060 is a wasteful number, since it uses less digits than its factorization.

1561060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 973 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1561060 is about 1249.4238672284. The cubic root of 1561060 is about 116.0040624816.

It can be divided in two parts, 15 and 61060, that added together give a triangular number (61075 = T₃₄₉).

The spelling of 1561060 in words is "one million, five hundred sixty-one thousand, sixty".