40654557 has 6 divisors (see below), whose sum is σ = 58723262. Its totient is φ = 27103032.

The previous prime is 40654519. The next prime is 40654561. The reversal of 40654557 is 75545604.

It is a happy number.

40654557 is a `hidden beast` number, since 40 + 65 + 4 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 1454436 = 6261^2 + 1206^2 .

It is not a de Polignac number, because 40654557 - 2¹⁹ = 40130269 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 (40654507) 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, 2258578 + ... + 2258595.

Almost surely, 2^40654557 is an apocalyptic number.

It is an amenable number.

40654557 is a deficient number, since it is larger than the sum of its proper divisors (18068705).

40654557 is a wasteful number, since it uses less digits than its factorization.

40654557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517179 (or 4517176 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 40654557 is about 6376.0926122509. The cubic root of 40654557 is about 343.8505666307.

The spelling of 40654557 in words is "forty million, six hundred fifty-four thousand, five hundred fifty-seven".