1561602 has 16 divisors (see below), whose sum is σ = 3569472. Its totient is φ = 446160.

The previous prime is 1561601. The next prime is 1561607. The reversal of 1561602 is 2061651.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1561601) 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, 18549 + ... + 18632.

It is an arithmetic number, because the mean of its divisors is an integer number (223092).

2^1561602 is an apocalyptic number.

1561602 is an abundant number, since it is smaller than the sum of its proper divisors (2007870).

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

1561602 is a wasteful number, since it uses less digits than its factorization.

1561602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37193.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1561602 is about 1249.6407483753. The cubic root of 1561602 is about 116.0174864641.

The spelling of 1561602 in words is "one million, five hundred sixty-one thousand, six hundred two".