400224541 has 8 divisors (see below), whose sum is σ = 418993344. Its totient is φ = 381569760.

The previous prime is 400224533. The next prime is 400224547. The reversal of 400224541 is 145422004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 400224541 - 2³ = 400224533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400224547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21280 + ... + 35401.

It is an arithmetic number, because the mean of its divisors is an integer number (52374168).

Almost surely, 2^400224541 is an apocalyptic number.

It is an amenable number.

400224541 is a deficient number, since it is larger than the sum of its proper divisors (18768803).

400224541 is a wasteful number, since it uses less digits than its factorization.

400224541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57011.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 400224541 is about 20005.6127374295. The cubic root of 400224541 is about 736.9441432911.

Adding to 400224541 its reverse (145422004), we get a palindrome (545646545).

The spelling of 400224541 in words is "four hundred million, two hundred twenty-four thousand, five hundred forty-one".