40551634 has 4 divisors (see below), whose sum is σ = 60827454. Its totient is φ = 20275816.

The previous prime is 40551631. The next prime is 40551649. The reversal of 40551634 is 43615504.

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

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 4515625 = 6003^2 + 2125^2 .

It is not an unprimeable number, because it can be changed into a prime (40551631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137907 + ... + 10137910.

Almost surely, 2^40551634 is an apocalyptic number.

40551634 is a deficient number, since it is larger than the sum of its proper divisors (20275820).

40551634 is a wasteful number, since it uses less digits than its factorization.

40551634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20275819.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40551634 is about 6368.0164886721. The cubic root of 40551634 is about 343.5601519624.

The spelling of 40551634 in words is "forty million, five hundred fifty-one thousand, six hundred thirty-four".