401222554 has 4 divisors (see below), whose sum is σ = 601833834. Its totient is φ = 200611276.

The previous prime is 401222537. The next prime is 401222573. The reversal of 401222554 is 455222104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 247338529 + 153884025 = 15727^2 + 12405^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100305637 + ... + 100305640.

Almost surely, 2^401222554 is an apocalyptic number.

401222554 is a deficient number, since it is larger than the sum of its proper divisors (200611280).

401222554 is a wasteful number, since it uses less digits than its factorization.

401222554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200611279.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 401222554 is about 20030.5405318978. The cubic root of 401222554 is about 737.5561908350.

Adding to 401222554 its reverse (455222104), we get a palindrome (856444658).

The spelling of 401222554 in words is "four hundred one million, two hundred twenty-two thousand, five hundred fifty-four".