40555154 has 4 divisors (see below), whose sum is σ = 60832734. Its totient is φ = 20277576.

The previous prime is 40555147. The next prime is 40555157. The reversal of 40555154 is 45155504.

It is a happy number.

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., 38105929 + 2449225 = 6173^2 + 1565^2 .

It is not an unprimeable number, because it can be changed into a prime (40555157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10138787 + ... + 10138790.

Almost surely, 2^40555154 is an apocalyptic number.

40555154 is a deficient number, since it is larger than the sum of its proper divisors (20277580).

40555154 is a wasteful number, since it uses less digits than its factorization.

40555154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20277579.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 40555154 is about 6368.2928638686. The cubic root of 40555154 is about 343.5700923489.

The spelling of 40555154 in words is "forty million, five hundred fifty-five thousand, one hundred fifty-four".