2513523401 has 4 divisors (see below), whose sum is σ = 2528052612. Its totient is φ = 2498994192.

The previous prime is 2513523373. The next prime is 2513523413. The reversal of 2513523401 is 1043253152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1598400400 + 915123001 = 39980^2 + 30251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2513523401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2513526401) 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, 7264346 + ... + 7264691.

It is an arithmetic number, because the mean of its divisors is an integer number (632013153).

Almost surely, 2^2513523401 is an apocalyptic number.

It is an amenable number.

2513523401 is a deficient number, since it is larger than the sum of its proper divisors (14529211).

2513523401 is a wasteful number, since it uses less digits than its factorization.

2513523401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14529210.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2513523401 is about 50135.0516205977. The cubic root of 2513523401 is about 1359.6516194234.

Adding to 2513523401 its reverse (1043253152), we get a palindrome (3556776553).

The spelling of 2513523401 in words is "two billion, five hundred thirteen million, five hundred twenty-three thousand, four hundred one".