55517401 has 3 divisors (see below), whose sum is σ = 55524853. Its totient is φ = 55509950.

The previous prime is 55517389. The next prime is 55517417. The reversal of 55517401 is 10471555.

The square root of 55517401 is 7451.

It is a perfect power (a square), and thus also a powerful number.

55517401 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 brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 55517401 - 2¹⁵ = 55484633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55517401.

It is not an unprimeable number, because it can be changed into a prime (55517431) 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 2 ways as a sum of consecutive naturals, for example, 3726 + ... + 11176.

Almost surely, 2^55517401 is an apocalyptic number.

55517401 is the 7451-st square number.

55517401 is the 3726-th centered octagonal number.

It is an amenable number.

55517401 is a deficient number, since it is larger than the sum of its proper divisors (7452).

55517401 is an frugal number, since it uses more digits than its factorization.

55517401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14902 (or 7451 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The cubic root of 55517401 is about 381.4840420532.

Adding to 55517401 its reverse (10471555), we get a palindrome (65988956).

It can be divided in two parts, 555 and 17401, that added together give a square (17956 = 134²).

The spelling of 55517401 in words is "fifty-five million, five hundred seventeen thousand, four hundred one".