40555957 has 8 divisors (see below), whose sum is σ = 44077880. Its totient is φ = 37091520.

The previous prime is 40555927. The next prime is 40555961. The reversal of 40555957 is 75955504.

It can be written as a sum of positive squares in 4 ways, for example, as 93636 + 40462321 = 306^2 + 6361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40555957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40555927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12894 + ... + 15727.

It is an arithmetic number, because the mean of its divisors is an integer number (5509735).

Almost surely, 2^40555957 is an apocalyptic number.

It is an amenable number.

40555957 is a deficient number, since it is larger than the sum of its proper divisors (3521923).

40555957 is a wasteful number, since it uses less digits than its factorization.

40555957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28743.

The product of its (nonzero) digits is 157500, while the sum is 40.

The square root of 40555957 is about 6368.3559102801. The cubic root of 40555957 is about 343.5723599190.

The spelling of 40555957 in words is "forty million, five hundred fifty-five thousand, nine hundred fifty-seven".