4540161 has 4 divisors (see below), whose sum is σ = 6053552. Its totient is φ = 3026772.

The previous prime is 4540147. The next prime is 4540171. The reversal of 4540161 is 1610454.

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 4540161 - 2⁶ = 4540097 is a prime.

It is a super-2 number, since 2×4540161² = 41226123811842, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540111) 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, 756691 + ... + 756696.

It is an arithmetic number, because the mean of its divisors is an integer number (1513388).

Almost surely, 2^4540161 is an apocalyptic number.

It is an amenable number.

4540161 is a deficient number, since it is larger than the sum of its proper divisors (1513391).

4540161 is a wasteful number, since it uses less digits than its factorization.

4540161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513390.

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

The square root of 4540161 is about 2130.7653554533. The cubic root of 4540161 is about 165.5860518836.

The spelling of 4540161 in words is "four million, five hundred forty thousand, one hundred sixty-one".