54100375507621 has 4 divisors (see below), whose sum is σ = 54100404494892. Its totient is φ = 54100346520352.

The previous prime is 54100375507583. The next prime is 54100375507631. The reversal of 54100375507621 is 12670557300145.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23936663885121 + 30163711622500 = 4892511^2 + 5492150^2 .

It is a cyclic number.

It is not a de Polignac number, because 54100375507621 - 2⁹ = 54100375507109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54100375507631) 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, 11486080 + ... + 15496153.

It is an arithmetic number, because the mean of its divisors is an integer number (13525101123723).

Almost surely, 2^{54100375507621} is an apocalyptic number.

It is an amenable number.

54100375507621 is a deficient number, since it is larger than the sum of its proper divisors (28987271).

54100375507621 is a wasteful number, since it uses less digits than its factorization.

54100375507621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28987270.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 54100375507621 in words is "fifty-four trillion, one hundred billion, three hundred seventy-five million, five hundred seven thousand, six hundred twenty-one".