7440161 has 8 divisors (see below), whose sum is σ = 7723584. Its totient is φ = 7161840.

The previous prime is 7440151. The next prime is 7440163. The reversal of 7440161 is 1610447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7440161 - 2²² = 3245857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7440163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1835 + ... + 4271.

It is an arithmetic number, because the mean of its divisors is an integer number (965448).

Almost surely, 2^7440161 is an apocalyptic number.

7440161 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7440161 is a deficient number, since it is larger than the sum of its proper divisors (283423).

7440161 is a wasteful number, since it uses less digits than its factorization.

7440161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7440161 is about 2727.6658519694. The cubic root of 7440161 is about 195.2214096965.

The spelling of 7440161 in words is "seven million, four hundred forty thousand, one hundred sixty-one".