40052357 has 4 divisors (see below), whose sum is σ = 42408396. Its totient is φ = 37696320.

The previous prime is 40052351. The next prime is 40052359. The reversal of 40052357 is 75325004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33339076 + 6713281 = 5774^2 + 2591^2 .

It is a cyclic number.

It is not a de Polignac number, because 40052357 - 2⁶ = 40052293 is a prime.

It is a super-3 number, since 3×40052357³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40052351) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1177994 + ... + 1178027.

It is an arithmetic number, because the mean of its divisors is an integer number (10602099).

Almost surely, 2^40052357 is an apocalyptic number.

It is an amenable number.

40052357 is a deficient number, since it is larger than the sum of its proper divisors (2356039).

40052357 is a wasteful number, since it uses less digits than its factorization.

40052357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356038.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 40052357 is about 6328.6931510384. The cubic root of 40052357 is about 342.1443396298.

The spelling of 40052357 in words is "forty million, fifty-two thousand, three hundred fifty-seven".