2521620023 has 8 divisors (see below), whose sum is σ = 2717290800. Its totient is φ = 2326192128.

The previous prime is 2521619993. The next prime is 2521620037. The reversal of 2521620023 is 3200261252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521620023 - 2⁶ = 2521619959 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 (2521620043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38858 + ... + 80951.

It is an arithmetic number, because the mean of its divisors is an integer number (339661350).

Almost surely, 2^2521620023 is an apocalyptic number.

2521620023 is a deficient number, since it is larger than the sum of its proper divisors (195670777).

2521620023 is a wasteful number, since it uses less digits than its factorization.

2521620023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121441.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2521620023 is about 50215.7348148964. The cubic root of 2521620023 is about 1361.1099688125.

Adding to 2521620023 its reverse (3200261252), we get a palindrome (5721881275).

The spelling of 2521620023 in words is "two billion, five hundred twenty-one million, six hundred twenty thousand, twenty-three".