40517557 has 6 divisors (see below), whose sum is σ = 42762678. Its totient is φ = 38384712.

The previous prime is 40517551. The next prime is 40517563. The reversal of 40517557 is 75571504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40517551) and next prime (40517563).

It can be written as a sum of positive squares in only one way, i.e., 30569841 + 9947716 = 5529^2 + 3154^2 .

It is not a de Polignac number, because 40517557 - 2³ = 40517549 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 (40517551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55758 + ... + 56479.

It is an arithmetic number, because the mean of its divisors is an integer number (7127113).

Almost surely, 2^40517557 is an apocalyptic number.

It is an amenable number.

40517557 is a deficient number, since it is larger than the sum of its proper divisors (2245121).

40517557 is a wasteful number, since it uses less digits than its factorization.

40517557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112275 (or 112256 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 40517557 is about 6365.3402894111. The cubic root of 40517557 is about 343.4638896660.

The spelling of 40517557 in words is "forty million, five hundred seventeen thousand, five hundred fifty-seven".