55231401 has 4 divisors (see below), whose sum is σ = 73641872. Its totient is φ = 36820932.

The previous prime is 55231373. The next prime is 55231433. The reversal of 55231401 is 10413255.

55231401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55231401 - 2⁷ = 55231273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55231471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9205231 + ... + 9205236.

It is an arithmetic number, because the mean of its divisors is an integer number (18410468).

Almost surely, 2^55231401 is an apocalyptic number.

It is an amenable number.

55231401 is a deficient number, since it is larger than the sum of its proper divisors (18410471).

55231401 is a wasteful number, since it uses less digits than its factorization.

55231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18410470.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55231401 is about 7431.7831642211. The cubic root of 55231401 is about 380.8278374280.

Adding to 55231401 its reverse (10413255), we get a palindrome (65644656).

The spelling of 55231401 in words is "fifty-five million, two hundred thirty-one thousand, four hundred one".