53551666251223 has 16 divisors (see below), whose sum is σ = 61392623120640. Its totient is φ = 45758415384000.

The previous prime is 53551666251211. The next prime is 53551666251253. The reversal of 53551666251223 is 32215266615535.

It is a cyclic number.

It is not a de Polignac number, because 53551666251223 - 2²⁵ = 53551632696791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551666251253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23472408 + ... + 25652626.

It is an arithmetic number, because the mean of its divisors is an integer number (3837038945040).

Almost surely, 2^{53551666251223} is an apocalyptic number.

53551666251223 is a deficient number, since it is larger than the sum of its proper divisors (7840956869417).

53551666251223 is a wasteful number, since it uses less digits than its factorization.

53551666251223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191158.

The product of its digits is 9720000, while the sum is 52.

The spelling of 53551666251223 in words is "fifty-three trillion, five hundred fifty-one billion, six hundred sixty-six million, two hundred fifty-one thousand, two hundred twenty-three".