2540002045 has 32 divisors (see below), whose sum is σ = 3774152448. Its totient is φ = 1601123328.

The previous prime is 2540002043. The next prime is 2540002109. The reversal of 2540002045 is 5402000452.

It is not a de Polignac number, because 2540002045 - 2¹ = 2540002043 is a prime.

It is a super-2 number, since 2×2540002045² = 12903220777208364050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540002043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24054 + ... + 75223.

It is an arithmetic number, because the mean of its divisors is an integer number (117942264).

Almost surely, 2^2540002045 is an apocalyptic number.

It is an amenable number.

2540002045 is a deficient number, since it is larger than the sum of its proper divisors (1234150403).

2540002045 is a wasteful number, since it uses less digits than its factorization.

2540002045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99349.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2540002045 is about 50398.4329617499. The cubic root of 2540002045 is about 1364.4093559326.

Adding to 2540002045 its reverse (5402000452), we get a palindrome (7942002497).

The spelling of 2540002045 in words is "two billion, five hundred forty million, two thousand, forty-five".