1261251 has 20 divisors (see below), whose sum is σ = 1968912. Its totient is φ = 803088.

The previous prime is 1261223. The next prime is 1261259. The reversal of 1261251 is 1521621.

1261251 is a `hidden beast` number, since 1 + 2 + 612 + 51 = 666.

It is not a de Polignac number, because 1261251 - 2¹³ = 1253059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1261259) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1525 + ... + 2201.

2^1261251 is an apocalyptic number.

1261251 is a deficient number, since it is larger than the sum of its proper divisors (707661).

1261251 is an equidigital number, since it uses as much as digits as its factorization.

1261251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 703 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1261251 is about 1123.0543174753. The cubic root of 1261251 is about 108.0439635828.

Adding to 1261251 its reverse (1521621), we get a palindrome (2782872).

The spelling of 1261251 in words is "one million, two hundred sixty-one thousand, two hundred fifty-one".