40112251 has 4 divisors (see below), whose sum is σ = 40509504. Its totient is φ = 39715000.

The previous prime is 40112243. The next prime is 40112257. The reversal of 40112251 is 15221104.

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 40112251 - 2³ = 40112243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40112257) 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, 198475 + ... + 198676.

It is an arithmetic number, because the mean of its divisors is an integer number (10127376).

Almost surely, 2^40112251 is an apocalyptic number.

40112251 is a deficient number, since it is larger than the sum of its proper divisors (397253).

40112251 is a wasteful number, since it uses less digits than its factorization.

40112251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397252.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 40112251 is about 6333.4233239221. The cubic root of 40112251 is about 342.3148013984.

Adding to 40112251 its reverse (15221104), we get a palindrome (55333355).

The spelling of 40112251 in words is "forty million, one hundred twelve thousand, two hundred fifty-one".