4815961 has 4 divisors (see below), whose sum is σ = 4851252. Its totient is φ = 4780672.

The previous prime is 4815931. The next prime is 4815973. The reversal of 4815961 is 1695184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 990025 + 3825936 = 995^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 4815961 - 2¹⁹ = 4291673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4815931) 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, 17440 + ... + 17713.

It is an arithmetic number, because the mean of its divisors is an integer number (1212813).

Almost surely, 2^4815961 is an apocalyptic number.

It is an amenable number.

4815961 is a deficient number, since it is larger than the sum of its proper divisors (35291).

4815961 is a wasteful number, since it uses less digits than its factorization.

4815961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35290.

The product of its digits is 8640, while the sum is 34.

The square root of 4815961 is about 2194.5297901829. The cubic root of 4815961 is about 168.8732988232.

It can be divided in two parts, 4815 and 961, that added together give a square (5776 = 76²).

The spelling of 4815961 in words is "four million, eight hundred fifteen thousand, nine hundred sixty-one".