1261588 has 12 divisors (see below), whose sum is σ = 2220372. Its totient is φ = 627200.

The previous prime is 1261571. The next prime is 1261627. The reversal of 1261588 is 8851621.

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 11664 = 1118^2 + 108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (185031).

2^1261588 is an apocalyptic number.

It is an amenable number.

1261588 is a deficient number, since it is larger than the sum of its proper divisors (958784).

1261588 is a wasteful number, since it uses less digits than its factorization.

1261588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1800 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 1261588 is about 1123.2043447209. The cubic root of 1261588 is about 108.0535856626.

It can be divided in two parts, 1261 and 588, that added together give a square (1849 = 43²).

The spelling of 1261588 in words is "one million, two hundred sixty-one thousand, five hundred eighty-eight".