2516203401 has 4 divisors (see below), whose sum is σ = 3354937872. Its totient is φ = 1677468932.

The previous prime is 2516203399. The next prime is 2516203411. The reversal of 2516203401 is 1043026152.

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 2516203401 - 2¹ = 2516203399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2516203411) 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, 419367231 + ... + 419367236.

It is an arithmetic number, because the mean of its divisors is an integer number (838734468).

Almost surely, 2^2516203401 is an apocalyptic number.

It is an amenable number.

2516203401 is a deficient number, since it is larger than the sum of its proper divisors (838734471).

2516203401 is an equidigital number, since it uses as much as digits as its factorization.

2516203401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838734470.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2516203401 is about 50161.7723072062. The cubic root of 2516203401 is about 1360.1346826321.

Adding to 2516203401 its reverse (1043026152), we get a palindrome (3559229553).

The spelling of 2516203401 in words is "two billion, five hundred sixteen million, two hundred three thousand, four hundred one".