4375561 has 4 divisors (see below), whose sum is σ = 4482324. Its totient is φ = 4268800.

The previous prime is 4375537. The next prime is 4375577. The reversal of 4375561 is 1655734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1655734 = 2 ⋅827867.

It can be written as a sum of positive squares in 2 ways, for example, as 1334025 + 3041536 = 1155^2 + 1744^2 .

It is a cyclic number.

It is not a de Polignac number, because 4375561 - 2¹¹ = 4373513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4373561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53320 + ... + 53401.

It is an arithmetic number, because the mean of its divisors is an integer number (1120581).

Almost surely, 2^4375561 is an apocalyptic number.

4375561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4375561 is a deficient number, since it is larger than the sum of its proper divisors (106763).

4375561 is a wasteful number, since it uses less digits than its factorization.

4375561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106762.

The product of its digits is 12600, while the sum is 31.

The square root of 4375561 is about 2091.7841666864. The cubic root of 4375561 is about 163.5603059466.

The spelling of 4375561 in words is "four million, three hundred seventy-five thousand, five hundred sixty-one".