2520020451 has 32 divisors (see below), whose sum is σ = 3664362240. Its totient is φ = 1531223424.

The previous prime is 2520020413. The next prime is 2520020513. The reversal of 2520020451 is 1540200252.

It is a happy number.

It is not a de Polignac number, because 2520020451 - 2²² = 2515826147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2520021451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1555720 + ... + 1557338.

It is an arithmetic number, because the mean of its divisors is an integer number (114511320).

Almost surely, 2^2520020451 is an apocalyptic number.

2520020451 is a deficient number, since it is larger than the sum of its proper divisors (1144341789).

2520020451 is a wasteful number, since it uses less digits than its factorization.

2520020451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2520020451 is about 50199.8052884670. The cubic root of 2520020451 is about 1360.8221044106.

The spelling of 2520020451 in words is "two billion, five hundred twenty million, twenty thousand, four hundred fifty-one".