40851361 has 4 divisors (see below), whose sum is σ = 40882324. Its totient is φ = 40820400.

The previous prime is 40851359. The next prime is 40851379. The reversal of 40851361 is 16315804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24690961 + 16160400 = 4969^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 40851361 - 2¹ = 40851359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40851331) 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, 13410 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (10220581).

Almost surely, 2^40851361 is an apocalyptic number.

It is an amenable number.

40851361 is a deficient number, since it is larger than the sum of its proper divisors (30963).

40851361 is a wasteful number, since it uses less digits than its factorization.

40851361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30962.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 40851361 is about 6391.5069428109. The cubic root of 40851361 is about 344.4045206319.

The spelling of 40851361 in words is "forty million, eight hundred fifty-one thousand, three hundred sixty-one".