4781251 has 4 divisors (see below), whose sum is σ = 4910512. Its totient is φ = 4651992.

The previous prime is 4781243. The next prime is 4781323. The reversal of 4781251 is 1521874.

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 4781251 - 2³ = 4781243 is a prime.

It is a super-2 number, since 2×4781251² = 45720722250002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4781351) 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, 64575 + ... + 64648.

It is an arithmetic number, because the mean of its divisors is an integer number (1227628).

Almost surely, 2^4781251 is an apocalyptic number.

4781251 is a deficient number, since it is larger than the sum of its proper divisors (129261).

4781251 is a wasteful number, since it uses less digits than its factorization.

4781251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129260.

The product of its digits is 2240, while the sum is 28.

The square root of 4781251 is about 2186.6071892318. The cubic root of 4781251 is about 168.4666142651.

The spelling of 4781251 in words is "four million, seven hundred eighty-one thousand, two hundred fifty-one".