400255545 has 16 divisors (see below), whose sum is σ = 668253312. Its totient is φ = 204188160.

The previous prime is 400255543. The next prime is 400255553. The reversal of 400255545 is 545552004.

It is not a de Polignac number, because 400255545 - 2¹ = 400255543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400255543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579736 + ... + 580425.

It is an arithmetic number, because the mean of its divisors is an integer number (41765832).

Almost surely, 2^400255545 is an apocalyptic number.

It is an amenable number.

400255545 is a deficient number, since it is larger than the sum of its proper divisors (267997767).

400255545 is a wasteful number, since it uses less digits than its factorization.

400255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160192.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 400255545 is about 20006.3876049626. The cubic root of 400255545 is about 736.9631722977.

The spelling of 400255545 in words is "four hundred million, two hundred fifty-five thousand, five hundred forty-five".