5251651 has 4 divisors (see below), whose sum is σ = 5259112. Its totient is φ = 5244192.

The previous prime is 5251627. The next prime is 5251663. The reversal of 5251651 is 1561525.

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 5251651 - 2⁹ = 5251139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550 + ... + 4123.

It is an arithmetic number, because the mean of its divisors is an integer number (1314778).

Almost surely, 2^5251651 is an apocalyptic number.

5251651 is a deficient number, since it is larger than the sum of its proper divisors (7461).

5251651 is an equidigital number, since it uses as much as digits as its factorization.

5251651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7460.

The product of its digits is 1500, while the sum is 25.

The square root of 5251651 is about 2291.6480968945. The cubic root of 5251651 is about 173.8195491285.

The spelling of 5251651 in words is "five million, two hundred fifty-one thousand, six hundred fifty-one".