2521210541 has 4 divisors (see below), whose sum is σ = 2526223392. Its totient is φ = 2516197692.

The previous prime is 2521210463. The next prime is 2521210543. The reversal of 2521210541 is 1450121252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2521210541 - 2¹⁰ = 2521209517 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521210543) 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, 2505671 + ... + 2506676.

It is an arithmetic number, because the mean of its divisors is an integer number (631555848).

Almost surely, 2^2521210541 is an apocalyptic number.

It is an amenable number.

2521210541 is a deficient number, since it is larger than the sum of its proper divisors (5012851).

2521210541 is an equidigital number, since it uses as much as digits as its factorization.

2521210541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012850.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2521210541 is about 50211.6574213598. The cubic root of 2521210541 is about 1361.0362886388.

Adding to 2521210541 its reverse (1450121252), we get a palindrome (3971331793).

It can be divided in two parts, 25212 and 10541, that added together give a palindrome (35753).

The spelling of 2521210541 in words is "two billion, five hundred twenty-one million, two hundred ten thousand, five hundred forty-one".