1561119 has 16 divisors (see below), whose sum is σ = 2411520. Its totient is φ = 879840.

The previous prime is 1561117. The next prime is 1561121. The reversal of 1561119 is 9111651.

It is an interprime number because it is at equal distance from previous prime (1561117) and next prime (1561121).

It is not a de Polignac number, because 1561119 - 2¹ = 1561117 is a prime.

It is a super-2 number, since 2×1561119² = 4874185064322, which contains 22 as substring.

1561119 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (150720).

2^1561119 is an apocalyptic number.

1561119 is a deficient number, since it is larger than the sum of its proper divisors (850401).

1561119 is an equidigital number, since it uses as much as digits as its factorization.

1561119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its digits is 270, while the sum is 24.

The square root of 1561119 is about 1249.4474778877. The cubic root of 1561119 is about 116.0055239145.

It can be divided in two parts, 156 and 1119, that added together give a triangular number (1275 = T₅₀).

The spelling of 1561119 in words is "one million, five hundred sixty-one thousand, one hundred nineteen".