2523511421 has 4 divisors (see below), whose sum is σ = 2523847392. Its totient is φ = 2523175452.

The previous prime is 2523511411. The next prime is 2523511453. The reversal of 2523511421 is 1241153252.

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 a de Polignac number, because none of the positive numbers 2^k-2523511421 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 (2523511411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156455 + ... + 171828.

It is an arithmetic number, because the mean of its divisors is an integer number (630961848).

Almost surely, 2^2523511421 is an apocalyptic number.

It is an amenable number.

2523511421 is a deficient number, since it is larger than the sum of its proper divisors (335971).

2523511421 is an equidigital number, since it uses as much as digits as its factorization.

2523511421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335970.

The product of its digits is 2400, while the sum is 26.

The square root of 2523511421 is about 50234.5640072650. The cubic root of 2523511421 is about 1361.4501941776.

Adding to 2523511421 its reverse (1241153252), we get a palindrome (3764664673).

The spelling of 2523511421 in words is "two billion, five hundred twenty-three million, five hundred eleven thousand, four hundred twenty-one".