400055513 has 16 divisors (see below), whose sum is σ = 472651200. Its totient is φ = 333814080.

The previous prime is 400055503. The next prime is 400055519. The reversal of 400055513 is 315550004.

It is a cyclic number.

It is not a de Polignac number, because 400055513 - 2⁴ = 400055497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400055519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17783 + ... + 33411.

It is an arithmetic number, because the mean of its divisors is an integer number (29540700).

Almost surely, 2^400055513 is an apocalyptic number.

It is an amenable number.

400055513 is a deficient number, since it is larger than the sum of its proper divisors (72595687).

400055513 is a wasteful number, since it uses less digits than its factorization.

400055513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15832.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 400055513 is about 20001.3877768519. The cubic root of 400055513 is about 736.8403834248.

The spelling of 400055513 in words is "four hundred million, fifty-five thousand, five hundred thirteen".