3457257 has 4 divisors (see below), whose sum is σ = 4609680. Its totient is φ = 2304836.

The previous prime is 3457253. The next prime is 3457261. The reversal of 3457257 is 7527543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7527543 = 3 ⋅2509181.

It is an interprime number because it is at equal distance from previous prime (3457253) and next prime (3457261).

It is a cyclic number.

It is not a de Polignac number, because 3457257 - 2² = 3457253 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3457253) 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, 576207 + ... + 576212.

It is an arithmetic number, because the mean of its divisors is an integer number (1152420).

Almost surely, 2^3457257 is an apocalyptic number.

It is an amenable number.

3457257 is a deficient number, since it is larger than the sum of its proper divisors (1152423).

3457257 is a wasteful number, since it uses less digits than its factorization.

3457257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152422.

The product of its digits is 29400, while the sum is 33.

The square root of 3457257 is about 1859.3700546153. The cubic root of 3457257 is about 151.2088538669.

It can be divided in two parts, 34 and 57257, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 3457257 in words is "three million, four hundred fifty-seven thousand, two hundred fifty-seven".