40161501 has 10 divisors (see below), whose sum is σ = 59994462. Its totient is φ = 26774280.

The previous prime is 40161469. The next prime is 40161503. The reversal of 40161501 is 10516104.

40161501 is a `hidden beast` number, since 4 + 0 + 161 + 501 = 666.

40161501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30239001 + 9922500 = 5499^2 + 3150^2 .

It is not a de Polignac number, because 40161501 - 2⁵ = 40161469 is a prime.

It is a super-2 number, since 2×40161501² = 3225892325146002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40161503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 247830 + ... + 247991.

Almost surely, 2^40161501 is an apocalyptic number.

It is an amenable number.

40161501 is a deficient number, since it is larger than the sum of its proper divisors (19832961).

40161501 is an equidigital number, since it uses as much as digits as its factorization.

40161501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495833 (or 495824 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 40161501 is about 6337.3102338453. The cubic root of 40161501 is about 342.4548426443.

Adding to 40161501 its reverse (10516104), we get a palindrome (50677605).

The spelling of 40161501 in words is "forty million, one hundred sixty-one thousand, five hundred one".