2620421251 has 8 divisors (see below), whose sum is σ = 2995543040. Its totient is φ = 2245493448.

The previous prime is 2620421239. The next prime is 2620421263. The reversal of 2620421251 is 1521240262.

It is an interprime number because it is at equal distance from previous prime (2620421239) and next prime (2620421263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2620421251 - 2¹¹ = 2620419203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2620421281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18291 + ... + 74668.

It is an arithmetic number, because the mean of its divisors is an integer number (374442880).

Almost surely, 2^2620421251 is an apocalyptic number.

2620421251 is a deficient number, since it is larger than the sum of its proper divisors (375121789).

2620421251 is an equidigital number, since it uses as much as digits as its factorization.

2620421251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96993.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2620421251 is about 51190.0503125363. The cubic root of 2620421251 is about 1378.6595629024.

The spelling of 2620421251 in words is "two billion, six hundred twenty million, four hundred twenty-one thousand, two hundred fifty-one".