401203553 has 4 divisors (see below), whose sum is σ = 424803780. Its totient is φ = 377603328.

The previous prime is 401203531. The next prime is 401203567. The reversal of 401203553 is 355302104.

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 303351889 + 97851664 = 17417^2 + 9892^2 .

It is a cyclic number.

It is not a de Polignac number, because 401203553 - 2¹² = 401199457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401202553) 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, 11800088 + ... + 11800121.

It is an arithmetic number, because the mean of its divisors is an integer number (106200945).

Almost surely, 2^401203553 is an apocalyptic number.

It is an amenable number.

401203553 is a deficient number, since it is larger than the sum of its proper divisors (23600227).

401203553 is a wasteful number, since it uses less digits than its factorization.

401203553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23600226.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 401203553 is about 20030.0662255520. The cubic root of 401203553 is about 737.5445476490.

Adding to 401203553 its reverse (355302104), we get a palindrome (756505657).

The spelling of 401203553 in words is "four hundred one million, two hundred three thousand, five hundred fifty-three".