2520784997 has 2 divisors, whose sum is σ = 2520784998. Its totient is φ = 2520784996.

The previous prime is 2520784991. The next prime is 2520785017. The reversal of 2520784997 is 7994870252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1969051876 + 551733121 = 44374^2 + 23489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520784997 - 2²⁰ = 2519736421 is a prime.

It is a super-2 number, since 2×2520784997² = 12708714002200580018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520784991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260392498 + 1260392499.

It is an arithmetic number, because the mean of its divisors is an integer number (1260392499).

Almost surely, 2^2520784997 is an apocalyptic number.

It is an amenable number.

2520784997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520784997 is an equidigital number, since it uses as much as digits as its factorization.

2520784997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 2520784997 is about 50207.4197405125. The cubic root of 2520784997 is about 1360.9597098941.

The spelling of 2520784997 in words is "two billion, five hundred twenty million, seven hundred eighty-four thousand, nine hundred ninety-seven".