2520045 has 32 divisors (see below), whose sum is σ = 4890240. Its totient is φ = 1221120.

The previous prime is 2520031. The next prime is 2520073. The reversal of 2520045 is 5400252.

It is not a de Polignac number, because 2520045 - 2⁶ = 2519981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 637 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (152820).

2^2520045 is an apocalyptic number.

It is an amenable number.

2520045 is a deficient number, since it is larger than the sum of its proper divisors (2370195).

2520045 is a wasteful number, since it uses less digits than its factorization.

2520045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2520045 is about 1587.4649602432. The cubic root of 2520045 is about 136.0826523252.

Adding to 2520045 its reverse (5400252), we get a palindrome (7920297).

The spelling of 2520045 in words is "two million, five hundred twenty thousand, forty-five".