1561476 has 48 divisors (see below), whose sum is σ = 4314240. Its totient is φ = 430080.

The previous prime is 1561463. The next prime is 1561499. The reversal of 1561476 is 6741651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2116 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (89880).

2^1561476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1561476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2157120).

1561476 is an abundant number, since it is smaller than the sum of its proper divisors (2752764).

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

1561476 is a wasteful number, since it uses less digits than its factorization.

1561476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 682 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 1561476 is about 1249.5903328691. The cubic root of 1561476 is about 116.0143660369.

The spelling of 1561476 in words is "one million, five hundred sixty-one thousand, four hundred seventy-six".