1257261 has 4 divisors (see below), whose sum is σ = 1676352. Its totient is φ = 838172.

The previous prime is 1257253. The next prime is 1257281. The reversal of 1257261 is 1627521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1257261 - 2³ = 1257253 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209541 + ... + 209546.

It is an arithmetic number, because the mean of its divisors is an integer number (419088).

2^1257261 is an apocalyptic number.

It is an amenable number.

1257261 is a deficient number, since it is larger than the sum of its proper divisors (419091).

1257261 is an equidigital number, since it uses as much as digits as its factorization.

1257261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419090.

The product of its digits is 840, while the sum is 24.

The square root of 1257261 is about 1121.2765047035. The cubic root of 1257261 is about 107.9299099410.

The spelling of 1257261 in words is "one million, two hundred fifty-seven thousand, two hundred sixty-one".