55523400403 has 4 divisors (see below), whose sum is σ = 55844345088. Its totient is φ = 55202455720.

The previous prime is 55523400287. The next prime is 55523400407. The reversal of 55523400403 is 30400432555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30400432555 = 5 ⋅6080086511.

It is a cyclic number.

It is not a de Polignac number, because 55523400403 - 2¹⁷ = 55523269331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55523400407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160472083 + ... + 160472428.

It is an arithmetic number, because the mean of its divisors is an integer number (13961086272).

Almost surely, 2^55523400403 is an apocalyptic number.

55523400403 is a deficient number, since it is larger than the sum of its proper divisors (320944685).

55523400403 is a wasteful number, since it uses less digits than its factorization.

55523400403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320944684.

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 55523400403 its reverse (30400432555), we get a palindrome (85923832958).

The spelling of 55523400403 in words is "fifty-five billion, five hundred twenty-three million, four hundred thousand, four hundred three".