4851561 has 32 divisors (see below), whose sum is σ = 7805952. Its totient is φ = 2640960.

The previous prime is 4851559. The next prime is 4851563. The reversal of 4851561 is 1651584.

It is an interprime number because it is at equal distance from previous prime (4851559) and next prime (4851563).

It is not a de Polignac number, because 4851561 - 2¹ = 4851559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4851563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18316 + ... + 18578.

It is an arithmetic number, because the mean of its divisors is an integer number (243936).

Almost surely, 2^4851561 is an apocalyptic number.

It is an amenable number.

4851561 is a deficient number, since it is larger than the sum of its proper divisors (2954391).

4851561 is a wasteful number, since it uses less digits than its factorization.

4851561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its digits is 4800, while the sum is 30.

The square root of 4851561 is about 2202.6259328356. The cubic root of 4851561 is about 169.2883863835.

The spelling of 4851561 in words is "four million, eight hundred fifty-one thousand, five hundred sixty-one".