400000052 has 12 divisors (see below), whose sum is σ = 700852320. Its totient is φ = 199756536.

The previous prime is 400000049. The next prime is 400000067. The reversal of 400000052 is 250000004.

It is a junction number, because it is equal to n+sod(n) for n = 399999979 and 400000042.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57152 + ... + 63767.

It is an arithmetic number, because the mean of its divisors is an integer number (58404360).

Almost surely, 2^400000052 is an apocalyptic number.

It is an amenable number.

400000052 is a deficient number, since it is larger than the sum of its proper divisors (300852268).

400000052 is a wasteful number, since it uses less digits than its factorization.

400000052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121750 (or 121748 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 400000052 is about 20000.0013000000. The cubic root of 400000052 is about 736.8063316563.

Adding to 400000052 its reverse (250000004), we get a palindrome (650000056).

The spelling of 400000052 in words is "four hundred million, fifty-two", and thus it is an aban number.