40557019 has 8 divisors (see below), whose sum is σ = 43061760. Its totient is φ = 38065536.

The previous prime is 40557017. The next prime is 40557029. The reversal of 40557019 is 91075504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40557019 - 2¹ = 40557017 is a prime.

It is a super-2 number, since 2×40557019² = 3289743580332722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40557017) 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, 3397 + ... + 9625.

It is an arithmetic number, because the mean of its divisors is an integer number (5382720).

Almost surely, 2^40557019 is an apocalyptic number.

40557019 is a deficient number, since it is larger than the sum of its proper divisors (2504741).

40557019 is a wasteful number, since it uses less digits than its factorization.

40557019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6629.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 40557019 is about 6368.4392907525. The cubic root of 40557019 is about 343.5753588263.

The spelling of 40557019 in words is "forty million, five hundred fifty-seven thousand, nineteen".