40226551 has 4 divisors (see below), whose sum is σ = 40493104. Its totient is φ = 39960000.

The previous prime is 40226513. The next prime is 40226581. The reversal of 40226551 is 15562204.

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 40226551 - 2⁷ = 40226423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40226581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133050 + ... + 133351.

It is an arithmetic number, because the mean of its divisors is an integer number (10123276).

Almost surely, 2^40226551 is an apocalyptic number.

40226551 is a deficient number, since it is larger than the sum of its proper divisors (266553).

40226551 is a wasteful number, since it uses less digits than its factorization.

40226551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266552.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40226551 is about 6342.4404608952. The cubic root of 40226551 is about 342.6396354642.

Adding to 40226551 its reverse (15562204), we get a palindrome (55788755).

The spelling of 40226551 in words is "forty million, two hundred twenty-six thousand, five hundred fifty-one".