40624161 has 4 divisors (see below), whose sum is σ = 54165552. Its totient is φ = 27082772.

The previous prime is 40624159. The next prime is 40624189. The reversal of 40624161 is 16142604.

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 40624161 - 2¹ = 40624159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40624151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6770691 + ... + 6770696.

It is an arithmetic number, because the mean of its divisors is an integer number (13541388).

Almost surely, 2^40624161 is an apocalyptic number.

It is an amenable number.

40624161 is a deficient number, since it is larger than the sum of its proper divisors (13541391).

40624161 is a wasteful number, since it uses less digits than its factorization.

40624161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13541390.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40624161 is about 6373.7085750762. The cubic root of 40624161 is about 343.7648502235.

Adding to 40624161 its reverse (16142604), we get a palindrome (56766765).

The spelling of 40624161 in words is "forty million, six hundred twenty-four thousand, one hundred sixty-one".