401006554 has 8 divisors (see below), whose sum is σ = 647779860. Its totient is φ = 185079936.

The previous prime is 401006549. The next prime is 401006581. The reversal of 401006554 is 455600104.

It can be written as a sum of positive squares in 2 ways, for example, as 401000625 + 5929 = 20025^2 + 77^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7711639 + ... + 7711690.

Almost surely, 2^401006554 is an apocalyptic number.

401006554 is a deficient number, since it is larger than the sum of its proper divisors (246773306).

401006554 is a wasteful number, since it uses less digits than its factorization.

401006554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15423344.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 401006554 is about 20025.1480394029. The cubic root of 401006554 is about 737.4238114918.

Adding to 401006554 its reverse (455600104), we get a palindrome (856606658).

The spelling of 401006554 in words is "four hundred one million, six thousand, five hundred fifty-four".