40375651 has 4 divisors (see below), whose sum is σ = 40829400. Its totient is φ = 39921904.

The previous prime is 40375639. The next prime is 40375661. The reversal of 40375651 is 15657304.

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 40375651 - 2⁷ = 40375523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40375631) 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, 226741 + ... + 226918.

It is an arithmetic number, because the mean of its divisors is an integer number (10207350).

Almost surely, 2^40375651 is an apocalyptic number.

40375651 is a deficient number, since it is larger than the sum of its proper divisors (453749).

40375651 is an equidigital number, since it uses as much as digits as its factorization.

40375651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453748.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 40375651 is about 6354.1837398678. The cubic root of 40375651 is about 343.0624456001.

The spelling of 40375651 in words is "forty million, three hundred seventy-five thousand, six hundred fifty-one".