40651161 has 8 divisors (see below), whose sum is σ = 54346080. Its totient is φ = 27028512.

The previous prime is 40651153. The next prime is 40651183. The reversal of 40651161 is 16115604.

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

It is not a de Polignac number, because 40651161 - 2³ = 40651153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40651151) 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, 16740 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (6793260).

Almost surely, 2^40651161 is an apocalyptic number.

It is an amenable number.

40651161 is a deficient number, since it is larger than the sum of its proper divisors (13694919).

40651161 is a wasteful number, since it uses less digits than its factorization.

40651161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36135.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 40651161 is about 6375.8262993905. The cubic root of 40651161 is about 343.8409920662.

Adding to 40651161 its reverse (16115604), we get a palindrome (56766765).

The spelling of 40651161 in words is "forty million, six hundred fifty-one thousand, one hundred sixty-one".