1561260 has 24 divisors (see below), whose sum is σ = 4371696. Its totient is φ = 416320.

The previous prime is 1561247. The next prime is 1561267. The reversal of 1561260 is 621651.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1561267) 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, 12951 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (182154).

2^1561260 is an apocalyptic number.

1561260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561260 is an abundant number, since it is smaller than the sum of its proper divisors (2810436).

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

1561260 is a wasteful number, since it uses less digits than its factorization.

1561260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26033 (or 26031 counting only the distinct ones).

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

The square root of 1561260 is about 1249.5039015545. The cubic root of 1561260 is about 116.0090163424.

The spelling of 1561260 in words is "one million, five hundred sixty-one thousand, two hundred sixty".