2521011023 has 4 divisors (see below), whose sum is σ = 2522124360. Its totient is φ = 2519897688.

The previous prime is 2521011019. The next prime is 2521011037. The reversal of 2521011023 is 3201101252.

It is a happy number.

2521011023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2521011023 - 2² = 2521011019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521010992 and 2521011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521011223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553265 + ... + 557802.

It is an arithmetic number, because the mean of its divisors is an integer number (630531090).

Almost surely, 2^2521011023 is an apocalyptic number.

2521011023 is a deficient number, since it is larger than the sum of its proper divisors (1113337).

2521011023 is a wasteful number, since it uses less digits than its factorization.

2521011023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113336.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2521011023 is about 50209.6706123432. The cubic root of 2521011023 is about 1361.0003854622. Note that the first 3 decimals are identical.

Adding to 2521011023 its reverse (3201101252), we get a palindrome (5722112275).

The spelling of 2521011023 in words is "two billion, five hundred twenty-one million, eleven thousand, twenty-three".