40240051 has 4 divisors (see below), whose sum is σ = 40533912. Its totient is φ = 39946192.

The previous prime is 40240033. The next prime is 40240093. The reversal of 40240051 is 15004204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40240051 - 2⁵ = 40240019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40240351) 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, 146725 + ... + 146998.

It is an arithmetic number, because the mean of its divisors is an integer number (10133478).

Almost surely, 2^40240051 is an apocalyptic number.

40240051 is a deficient number, since it is larger than the sum of its proper divisors (293861).

40240051 is a wasteful number, since it uses less digits than its factorization.

40240051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293860.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40240051 is about 6343.5046307227. The cubic root of 40240051 is about 342.6779610444.

Adding to 40240051 its reverse (15004204), we get a palindrome (55244255).

The spelling of 40240051 in words is "forty million, two hundred forty thousand, fifty-one".