2520440445 has 16 divisors (see below), whose sum is σ = 4033334592. Its totient is φ = 1344024960.

The previous prime is 2520440389. The next prime is 2520440473. The reversal of 2520440445 is 5440440252.

It is not a de Polignac number, because 2520440445 - 2⁶ = 2520440381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158665 + ... + 173825.

It is an arithmetic number, because the mean of its divisors is an integer number (252083412).

Almost surely, 2^2520440445 is an apocalyptic number.

It is an amenable number.

2520440445 is a deficient number, since it is larger than the sum of its proper divisors (1512894147).

2520440445 is a wasteful number, since it uses less digits than its factorization.

2520440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26252.

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 2520440445 is about 50203.9883375813. The cubic root of 2520440445 is about 1360.8976997455.

Adding to 2520440445 its reverse (5440440252), we get a palindrome (7960880697).

The spelling of 2520440445 in words is "two billion, five hundred twenty million, four hundred forty thousand, four hundred forty-five".