55202557651 has 4 divisors (see below), whose sum is σ = 55277868832. Its totient is φ = 55127246472.

The previous prime is 55202557637. The next prime is 55202557667. The reversal of 55202557651 is 15675520255.

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: 15675520255 = 5 ⋅3135104051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55202557651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55202557598 and 55202557607.

It is not an unprimeable number, because it can be changed into a prime (55202557451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37654491 + ... + 37655956.

It is an arithmetic number, because the mean of its divisors is an integer number (13819467208).

Almost surely, 2^55202557651 is an apocalyptic number.

55202557651 is a deficient number, since it is larger than the sum of its proper divisors (75311181).

55202557651 is an equidigital number, since it uses as much as digits as its factorization.

55202557651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75311180.

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 55202557651 in words is "fifty-five billion, two hundred two million, five hundred fifty-seven thousand, six hundred fifty-one".