400554223521241 has 4 divisors (see below), whose sum is σ = 400554595546084. Its totient is φ = 400553851496400.

The previous prime is 400554223521239. The next prime is 400554223521281. The reversal of 400554223521241 is 142125322455004.

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 4627639928025 + 395926583593216 = 2151195^2 + 19897904^2 .

It is a cyclic number.

It is not a de Polignac number, because 400554223521241 - 2¹ = 400554223521239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400554223521194 and 400554223521203.

It is not an unprimeable number, because it can be changed into a prime (400554223521281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184392690 + ... + 186552331.

It is an arithmetic number, because the mean of its divisors is an integer number (100138648886521).

Almost surely, 2^{400554223521241} is an apocalyptic number.

It is an amenable number.

400554223521241 is a deficient number, since it is larger than the sum of its proper divisors (372024843).

400554223521241 is a wasteful number, since it uses less digits than its factorization.

400554223521241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372024842.

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 400554223521241 its reverse (142125322455004), we get a palindrome (542679545976245).

The spelling of 400554223521241 in words is "four hundred trillion, five hundred fifty-four billion, two hundred twenty-three million, five hundred twenty-one thousand, two hundred forty-one".