945257 has 4 divisors (see below), whose sum is σ = 948036. Its totient is φ = 942480.

The previous prime is 945233. The next prime is 945289. The reversal of 945257 is 752549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752549 = 7 ⋅107507.

It can be written as a sum of positive squares in 2 ways, for example, as 212521 + 732736 = 461^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 945257 - 2¹⁰ = 944233 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 945257.

It is not an unprimeable number, because it can be changed into a prime (945227) 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, 794 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (237009).

2⁹⁴⁵²⁵⁷ is an apocalyptic number.

945257 is the 794-th pentagonal number.

It is an amenable number.

945257 is a deficient number, since it is larger than the sum of its proper divisors (2779).

945257 is a wasteful number, since it uses less digits than its factorization.

945257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its digits is 12600, while the sum is 32.

The square root of 945257 is about 972.2432823116. The cubic root of 945257 is about 98.1408844151.

The spelling of 945257 in words is "nine hundred forty-five thousand, two hundred fifty-seven".