55121367573453 has 4 divisors (see below), whose sum is σ = 73495156764608. Its totient is φ = 36747578382300.

The previous prime is 55121367573449. The next prime is 55121367573463. The reversal of 55121367573453 is 35437576312155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55121367573453 - 2² = 55121367573449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55121367573393 and 55121367573402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55121367573403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9186894595573 + ... + 9186894595578.

It is an arithmetic number, because the mean of its divisors is an integer number (18373789191152).

Almost surely, 2^{55121367573453} is an apocalyptic number.

It is an amenable number.

55121367573453 is a deficient number, since it is larger than the sum of its proper divisors (18373789191155).

55121367573453 is a wasteful number, since it uses less digits than its factorization.

55121367573453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18373789191154.

The product of its digits is 39690000, while the sum is 57.

The spelling of 55121367573453 in words is "fifty-five trillion, one hundred twenty-one billion, three hundred sixty-seven million, five hundred seventy-three thousand, four hundred fifty-three".