2563145 has 16 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 1850304.

The previous prime is 2563139. The next prime is 2563147. The reversal of 2563145 is 5413652.

2563145 = T₁₃₀ + T₁₃₁ + ... + T₂₅₉.

It is a cyclic number.

It is not a de Polignac number, because 2563145 - 2¹⁶ = 2497609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2563147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636 + ... + 3474.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

2^2563145 is an apocalyptic number.

It is an amenable number.

2563145 is a deficient number, since it is larger than the sum of its proper divisors (823735).

2563145 is a wasteful number, since it uses less digits than its factorization.

2563145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 3600, while the sum is 26.

The square root of 2563145 is about 1600.9825108351. The cubic root of 2563145 is about 136.8540723340.

Adding to 2563145 its reverse (5413652), we get a palindrome (7976797).

The spelling of 2563145 in words is "two million, five hundred sixty-three thousand, one hundred forty-five".