4649251 has 4 divisors (see below), whose sum is σ = 4809600. Its totient is φ = 4488904.

The previous prime is 4649231. The next prime is 4649261. The reversal of 4649251 is 1529464.

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 4649251 - 2⁵ = 4649219 is a prime.

It is a super-2 number, since 2×4649251² = 43231069722002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4649201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80131 + ... + 80188.

It is an arithmetic number, because the mean of its divisors is an integer number (1202400).

Almost surely, 2^4649251 is an apocalyptic number.

4649251 is a deficient number, since it is larger than the sum of its proper divisors (160349).

4649251 is a wasteful number, since it uses less digits than its factorization.

4649251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160348.

The product of its digits is 8640, while the sum is 31.

The square root of 4649251 is about 2156.2121880743. The cubic root of 4649251 is about 166.9017912537.

It can be divided in two parts, 4649 and 251, that added together give a square (4900 = 70²).

The spelling of 4649251 in words is "four million, six hundred forty-nine thousand, two hundred fifty-one".