40740557 has 8 divisors (see below), whose sum is σ = 47863200. Its totient is φ = 34187760.

The previous prime is 40740547. The next prime is 40740559. The reversal of 40740557 is 75504704.

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-40740557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40740559) 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, 142307 + ... + 142592.

It is an arithmetic number, because the mean of its divisors is an integer number (5982900).

Almost surely, 2^40740557 is an apocalyptic number.

It is an amenable number.

40740557 is a deficient number, since it is larger than the sum of its proper divisors (7122643).

40740557 is a wasteful number, since it uses less digits than its factorization.

40740557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284923.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 40740557 is about 6382.8329917052. The cubic root of 40740557 is about 344.0928545310.

The spelling of 40740557 in words is "forty million, seven hundred forty thousand, five hundred fifty-seven".