4040051 has 4 divisors (see below), whose sum is σ = 4044072. Its totient is φ = 4036032.

The previous prime is 4040041. The next prime is 4040053. The reversal of 4040051 is 1500404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040053) 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, 995 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (1011018).

Almost surely, 2^4040051 is an apocalyptic number.

4040051 is a deficient number, since it is larger than the sum of its proper divisors (4021).

4040051 is a wasteful number, since it uses less digits than its factorization.

4040051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4040051 is about 2009.9878109083. The cubic root of 4040051 is about 159.2681550179.

Adding to 4040051 its reverse (1500404), we get a palindrome (5540455).

The spelling of 4040051 in words is "four million, forty thousand, fifty-one".