4401561 has 4 divisors (see below), whose sum is σ = 5868752. Its totient is φ = 2934372.

The previous prime is 4401517. The next prime is 4401563. The reversal of 4401561 is 1651044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4401561 - 2⁶ = 4401497 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4401563) 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, 733591 + ... + 733596.

It is an arithmetic number, because the mean of its divisors is an integer number (1467188).

Almost surely, 2^4401561 is an apocalyptic number.

It is an amenable number.

4401561 is a deficient number, since it is larger than the sum of its proper divisors (1467191).

4401561 is a wasteful number, since it uses less digits than its factorization.

4401561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467190.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4401561 is about 2097.9897521199. The cubic root of 4401561 is about 163.8836300184.

The spelling of 4401561 in words is "four million, four hundred one thousand, five hundred sixty-one".