55203252511 has 12 divisors (see below), whose sum is σ = 62227044072. Its totient is φ = 48565902000.

The previous prime is 55203252463. The next prime is 55203252523. The reversal of 55203252511 is 11525230255.

It is not a de Polignac number, because 55203252511 - 2¹⁹ = 55202728223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55203252311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2600500 + ... + 2621641.

It is an arithmetic number, because the mean of its divisors is an integer number (5185587006).

Almost surely, 2^55203252511 is an apocalyptic number.

55203252511 is a deficient number, since it is larger than the sum of its proper divisors (7023791561).

55203252511 is a wasteful number, since it uses less digits than its factorization.

55203252511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222214 (or 5222183 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 55203252511 its reverse (11525230255), we get a palindrome (66728482766).

The spelling of 55203252511 in words is "fifty-five billion, two hundred three million, two hundred fifty-two thousand, five hundred eleven".