1561002 has 16 divisors (see below), whose sum is σ = 3286560. Its totient is φ = 492912.

The previous prime is 1560997. The next prime is 1561003. The reversal of 1561002 is 2001651.

It is not an unprimeable number, because it can be changed into a prime (1561003) 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, 6733 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (205410).

2^1561002 is an apocalyptic number.

1561002 is an abundant number, since it is smaller than the sum of its proper divisors (1725558).

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

1561002 is a wasteful number, since it uses less digits than its factorization.

1561002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1561002 is about 1249.4006563149. The cubic root of 1561002 is about 116.0026257828.

Adding to 1561002 its reverse (2001651), we get a palindrome (3562653).

The spelling of 1561002 in words is "one million, five hundred sixty-one thousand, two".