1261560 has 32 divisors (see below), whose sum is σ = 3785040. Its totient is φ = 336384.

The previous prime is 1261549. The next prime is 1261567. The reversal of 1261560 is 651621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261567) 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, 5137 + ... + 5376.

2^1261560 is an apocalyptic number.

1261560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261560 is an abundant number, since it is smaller than the sum of its proper divisors (2523480).

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

1261560 is a wasteful number, since it uses less digits than its factorization.

1261560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10527 (or 10523 counting only the distinct ones).

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

The square root of 1261560 is about 1123.1918803125. The cubic root of 1261560 is about 108.0527862672.

It can be divided in two parts, 12615 and 60, that multiplied together give a square (756900 = 870²).

The spelling of 1261560 in words is "one million, two hundred sixty-one thousand, five hundred sixty".