2520346021 has 8 divisors (see below), whose sum is σ = 2546546688. Its totient is φ = 2494170000.

The previous prime is 2520346019. The next prime is 2520346061. The reversal of 2520346021 is 1206430252.

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

It is a cyclic number.

It is not a de Polignac number, because 2520346021 - 2¹ = 2520346019 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 (2520346061) 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 7 ways as a sum of consecutive naturals, for example, 256876 + ... + 266506.

It is an arithmetic number, because the mean of its divisors is an integer number (318318336).

Almost surely, 2^2520346021 is an apocalyptic number.

It is an amenable number.

2520346021 is a deficient number, since it is larger than the sum of its proper divisors (26200667).

2520346021 is a wasteful number, since it uses less digits than its factorization.

2520346021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2520346021 is about 50203.0479253999. The cubic root of 2520346021 is about 1360.8807049634.

Adding to 2520346021 its reverse (1206430252), we get a palindrome (3726776273).

The spelling of 2520346021 in words is "two billion, five hundred twenty million, three hundred forty-six thousand, twenty-one".