2258945 has 16 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 1594560.

The previous prime is 2258917. The next prime is 2258947. The reversal of 2258945 is 5498522.

It is a happy number.

It is not a de Polignac number, because 2258945 - 2¹² = 2254849 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2258947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740 + ... + 2250.

It is an arithmetic number, because the mean of its divisors is an integer number (190512).

It is a Proth number, since it is equal to 1103 ⋅ 2¹¹ + 1 and 1103 < 2¹¹.

2^2258945 is an apocalyptic number.

It is an amenable number.

2258945 is a deficient number, since it is larger than the sum of its proper divisors (789247).

2258945 is a wasteful number, since it uses less digits than its factorization.

2258945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

The product of its digits is 28800, while the sum is 35.

The square root of 2258945 is about 1502.9787090974. The cubic root of 2258945 is about 131.2104884846.

The spelling of 2258945 in words is "two million, two hundred fifty-eight thousand, nine hundred forty-five".