40545057 has 16 divisors (see below), whose sum is σ = 62353280. Its totient is φ = 22954752.

The previous prime is 40545019. The next prime is 40545061. The reversal of 40545057 is 75054504.

It is not a de Polignac number, because 40545057 - 2¹² = 40540961 is a prime.

It is the 6368-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40545097) by changing a digit.

It is a nontrivial repunit in base 6367.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6568 + ... + 11145.

It is an arithmetic number, because the mean of its divisors is an integer number (3897080).

Almost surely, 2^40545057 is an apocalyptic number.

It is an amenable number.

40545057 is a deficient number, since it is larger than the sum of its proper divisors (21808223).

40545057 is a wasteful number, since it uses less digits than its factorization.

40545057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17832.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 40545057 is about 6367.5000588928. The cubic root of 40545057 is about 343.5415771475.

The spelling of 40545057 in words is "forty million, five hundred forty-five thousand, fifty-seven".