1045257 has 4 divisors (see below), whose sum is σ = 1393680. Its totient is φ = 696836.

The previous prime is 1045241. The next prime is 1045273. The reversal of 1045257 is 7525401.

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 an interprime number because it is at equal distance from previous prime (1045241) and next prime (1045273).

It is a cyclic number.

It is not a de Polignac number, because 1045257 - 2⁴ = 1045241 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1045237) 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, 174207 + ... + 174212.

It is an arithmetic number, because the mean of its divisors is an integer number (348420).

2^1045257 is an apocalyptic number.

It is an amenable number.

1045257 is a deficient number, since it is larger than the sum of its proper divisors (348423).

1045257 is an equidigital number, since it uses as much as digits as its factorization.

1045257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348422.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 1045257 is about 1022.3781100943. The cubic root of 1045257 is about 101.4863644151.

The spelling of 1045257 in words is "one million, forty-five thousand, two hundred fifty-seven".