4721161 has 4 divisors (see below), whose sum is σ = 4765392. Its totient is φ = 4676932.

The previous prime is 4721153. The next prime is 4721173. The reversal of 4721161 is 1611274.

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 a cyclic number.

It is not a de Polignac number, because 4721161 - 2³ = 4721153 is a prime.

It is a super-2 number, since 2×4721161² = 44578722375842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4721261) 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, 21955 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (1191348).

Almost surely, 2^4721161 is an apocalyptic number.

It is an amenable number.

4721161 is a deficient number, since it is larger than the sum of its proper divisors (44231).

4721161 is a wasteful number, since it uses less digits than its factorization.

4721161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44230.

The product of its digits is 336, while the sum is 22.

The square root of 4721161 is about 2172.8232785940. The cubic root of 4721161 is about 167.7578830002.

The spelling of 4721161 in words is "four million, seven hundred twenty-one thousand, one hundred sixty-one".