40006057 has 16 divisors (see below), whose sum is σ = 50052352. Its totient is φ = 31129920.

The previous prime is 40006033. The next prime is 40006061. The reversal of 40006057 is 75060004.

It is a cyclic number.

It is not a de Polignac number, because 40006057 - 2²³ = 31617449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40006067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1948 + ... + 9154.

It is an arithmetic number, because the mean of its divisors is an integer number (3128272).

Almost surely, 2^40006057 is an apocalyptic number.

It is an amenable number.

40006057 is a deficient number, since it is larger than the sum of its proper divisors (10046295).

40006057 is a wasteful number, since it uses less digits than its factorization.

40006057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40006057 is about 6325.0341501054. The cubic root of 40006057 is about 342.0124506713.

The spelling of 40006057 in words is "forty million, six thousand, fifty-seven".