2455216251 has 4 divisors (see below), whose sum is σ = 3273621672. Its totient is φ = 1636810832.

The previous prime is 2455216237. The next prime is 2455216261. The reversal of 2455216251 is 1526125542.

2455216251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2455216251 - 2⁷ = 2455216123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2455216261) 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, 409202706 + ... + 409202711.

It is an arithmetic number, because the mean of its divisors is an integer number (818405418).

Almost surely, 2^2455216251 is an apocalyptic number.

2455216251 is a deficient number, since it is larger than the sum of its proper divisors (818405421).

2455216251 is an equidigital number, since it uses as much as digits as its factorization.

2455216251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818405420.

The product of its digits is 24000, while the sum is 33.

The square root of 2455216251 is about 49550.1387586352. The cubic root of 2455216251 is about 1349.0558100207.

The spelling of 2455216251 in words is "two billion, four hundred fifty-five million, two hundred sixteen thousand, two hundred fifty-one".