54536152421 has 4 divisors (see below), whose sum is σ = 54965571072. Its totient is φ = 54106733772.

The previous prime is 54536152393. The next prime is 54536152459. The reversal of 54536152421 is 12425163545.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12425163545 = 5 ⋅2485032709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54536152421 is a prime.

It is a super-2 number, since 2×54536152421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54536052421) 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, 214709135 + ... + 214709388.

It is an arithmetic number, because the mean of its divisors is an integer number (13741392768).

Almost surely, 2^54536152421 is an apocalyptic number.

It is an amenable number.

54536152421 is a deficient number, since it is larger than the sum of its proper divisors (429418651).

54536152421 is a wasteful number, since it uses less digits than its factorization.

54536152421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429418650.

The product of its digits is 144000, while the sum is 38.

The spelling of 54536152421 in words is "fifty-four billion, five hundred thirty-six million, one hundred fifty-two thousand, four hundred twenty-one".