2520401023 has 4 divisors (see below), whose sum is σ = 2880458320. Its totient is φ = 2160343728.

The previous prime is 2520401017. The next prime is 2520401033. The reversal of 2520401023 is 3201040252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2520401023 - 2¹⁷ = 2520269951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520401003) 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 3 ways as a sum of consecutive naturals, for example, 180028638 + ... + 180028651.

It is an arithmetic number, because the mean of its divisors is an integer number (720114580).

Almost surely, 2^2520401023 is an apocalyptic number.

2520401023 is a deficient number, since it is larger than the sum of its proper divisors (360057297).

2520401023 is an equidigital number, since it uses as much as digits as its factorization.

2520401023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360057296.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2520401023 is about 50203.5957178368. The cubic root of 2520401023 is about 1360.8906044792.

Adding to 2520401023 its reverse (3201040252), we get a palindrome (5721441275).

The spelling of 2520401023 in words is "two billion, five hundred twenty million, four hundred one thousand, twenty-three".