1257061 has 4 divisors (see below), whose sum is σ = 1353772. Its totient is φ = 1160352.

The previous prime is 1257049. The next prime is 1257071. The reversal of 1257061 is 1607521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1607521 = 103 ⋅15607.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 1012036 = 495^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1257061 - 2⁵ = 1257029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48336 + ... + 48361.

It is an arithmetic number, because the mean of its divisors is an integer number (338443).

2^1257061 is an apocalyptic number.

It is an amenable number.

1257061 is a deficient number, since it is larger than the sum of its proper divisors (96711).

1257061 is an equidigital number, since it uses as much as digits as its factorization.

1257061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96710.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1257061 is about 1121.1873170885. The cubic root of 1257061 is about 107.9241866195.

Subtracting from 1257061 its product of nonzero digits (420), we obtain a square (1256641 = 1121²).

The spelling of 1257061 in words is "one million, two hundred fifty-seven thousand, sixty-one".