40552155 has 72 divisors (see below), whose sum is σ = 83549232. Its totient is φ = 18135936.

The previous prime is 40552153. The next prime is 40552159. The reversal of 40552155 is 55125504.

It is not a de Polignac number, because 40552155 - 2¹ = 40552153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40552153) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 116692 + ... + 117038.

It is an arithmetic number, because the mean of its divisors is an integer number (1160406).

Almost surely, 2^40552155 is an apocalyptic number.

40552155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40552155 is an abundant number, since it is smaller than the sum of its proper divisors (42997077).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40552155 is a wasteful number, since it uses less digits than its factorization.

40552155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 40552155 is about 6368.0573960981. The cubic root of 40552155 is about 343.5616232889.

Adding to 40552155 its reverse (55125504), we get a palindrome (95677659).

The spelling of 40552155 in words is "forty million, five hundred fifty-two thousand, one hundred fifty-five".