4951865 has 8 divisors (see below), whose sum is σ = 5986440. Its totient is φ = 3932032.

The previous prime is 4951861. The next prime is 4951867. The reversal of 4951865 is 5681594.

It can be written as a sum of positive squares in 4 ways, for example, as 2226064 + 2725801 = 1492^2 + 1651^2 .

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 4951865 - 2² = 4951861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4951861) 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, 2930 + ... + 4299.

It is an arithmetic number, because the mean of its divisors is an integer number (748305).

Almost surely, 2^4951865 is an apocalyptic number.

It is an amenable number.

4951865 is a deficient number, since it is larger than the sum of its proper divisors (1034575).

4951865 is a wasteful number, since it uses less digits than its factorization.

4951865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371.

The product of its digits is 43200, while the sum is 38.

The square root of 4951865 is about 2225.2786342389. The cubic root of 4951865 is about 170.4470930291.

It can be divided in two parts, 49 and 51865, that multiplied together give a triangular number (2541385 = T₂₂₅₄).

The spelling of 4951865 in words is "four million, nine hundred fifty-one thousand, eight hundred sixty-five".