6426251 has 4 divisors (see below), whose sum is σ = 6920592. Its totient is φ = 5931912.

The previous prime is 6426247. The next prime is 6426257. The reversal of 6426251 is 1526246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1526246 = 2 ⋅763123.

It is a cyclic number.

It is not a de Polignac number, because 6426251 - 2² = 6426247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6426251.

It is not an unprimeable number, because it can be changed into a prime (6426257) 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, 247151 + ... + 247176.

It is an arithmetic number, because the mean of its divisors is an integer number (1730148).

Almost surely, 2^6426251 is an apocalyptic number.

6426251 is a deficient number, since it is larger than the sum of its proper divisors (494341).

6426251 is a wasteful number, since it uses less digits than its factorization.

6426251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494340.

The product of its digits is 2880, while the sum is 26.

The square root of 6426251 is about 2535.0051281999. The cubic root of 6426251 is about 185.9170536235.

Subtracting from 6426251 its sum of digits (26), we obtain a square (6426225 = 2535²).

The spelling of 6426251 in words is "six million, four hundred twenty-six thousand, two hundred fifty-one".