40380554 has 4 divisors (see below), whose sum is σ = 60570834. Its totient is φ = 20190276.

The previous prime is 40380517. The next prime is 40380563. The reversal of 40380554 is 45508304.

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., 26801329 + 13579225 = 5177^2 + 3685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095137 + ... + 10095140.

Almost surely, 2^40380554 is an apocalyptic number.

40380554 is a deficient number, since it is larger than the sum of its proper divisors (20190280).

40380554 is a wasteful number, since it uses less digits than its factorization.

40380554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190279.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 40380554 is about 6354.5695369553. The cubic root of 40380554 is about 343.0763315854.

Adding to 40380554 its reverse (45508304), we get a palindrome (85888858).

The spelling of 40380554 in words is "forty million, three hundred eighty thousand, five hundred fifty-four".