40051604 has 6 divisors (see below), whose sum is σ = 70090314. Its totient is φ = 20025800.

The previous prime is 40051577. The next prime is 40051631. The reversal of 40051604 is 40615004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40051577) and next prime (40051631).

It can be written as a sum of positive squares in only one way, i.e., 39715204 + 336400 = 6302^2 + 580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006447 + ... + 5006454.

It is an arithmetic number, because the mean of its divisors is an integer number (11681719).

Almost surely, 2^40051604 is an apocalyptic number.

It is an amenable number.

40051604 is a deficient number, since it is larger than the sum of its proper divisors (30038710).

40051604 is a wasteful number, since it uses less digits than its factorization.

40051604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012905 (or 10012903 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40051604 is about 6328.6336598037. The cubic root of 40051604 is about 342.1421954672.

Adding to 40051604 its reverse (40615004), we get a palindrome (80666608).

The spelling of 40051604 in words is "forty million, fifty-one thousand, six hundred four".