2555145 has 28 divisors (see below), whose sum is σ = 4603716. Its totient is φ = 1360800.

The previous prime is 2555141. The next prime is 2555159. The reversal of 2555145 is 5415552.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 944784 = 1269^2 + 972^2 .

It is not a de Polignac number, because 2555145 - 2² = 2555141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2555141) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3295 + ... + 3995.

2^2555145 is an apocalyptic number.

It is an amenable number.

2555145 is a deficient number, since it is larger than the sum of its proper divisors (2048571).

2555145 is an frugal number, since it uses more digits than its factorization.

2555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 709 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 2555145 is about 1598.4820924865. The cubic root of 2555145 is about 136.7115425371.

The spelling of 2555145 in words is "two million, five hundred fifty-five thousand, one hundred forty-five".