400555265 has 8 divisors (see below), whose sum is σ = 524363328. Its totient is φ = 291312880.

The previous prime is 400555231. The next prime is 400555273. The reversal of 400555265 is 562555004.

400555265 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 400555265 - 2²⁰ = 399506689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641357 + ... + 3641466.

It is an arithmetic number, because the mean of its divisors is an integer number (65545416).

Almost surely, 2^400555265 is an apocalyptic number.

It is an amenable number.

400555265 is a deficient number, since it is larger than the sum of its proper divisors (123808063).

400555265 is a wasteful number, since it uses less digits than its factorization.

400555265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282839.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 400555265 is about 20013.8768108530. The cubic root of 400555265 is about 737.1470777166.

The spelling of 400555265 in words is "four hundred million, five hundred fifty-five thousand, two hundred sixty-five".