54215034501621 has 32 divisors (see below), whose sum is σ = 82719283046400. Its totient is φ = 30940313117760.

The previous prime is 54215034501577. The next prime is 54215034501689. The reversal of 54215034501621 is 12610543051245.

It is not a de Polignac number, because 54215034501621 - 2⁷ = 54215034501493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54215034501621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54215034503621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295746690 + ... + 295929948.

It is an arithmetic number, because the mean of its divisors is an integer number (2584977595200).

Almost surely, 2^{54215034501621} is an apocalyptic number.

It is an amenable number.

54215034501621 is a deficient number, since it is larger than the sum of its proper divisors (28504248544779).

54215034501621 is a wasteful number, since it uses less digits than its factorization.

54215034501621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201249.

The product of its (nonzero) digits is 144000, while the sum is 39.

Adding to 54215034501621 its reverse (12610543051245), we get a palindrome (66825577552866).

The spelling of 54215034501621 in words is "fifty-four trillion, two hundred fifteen billion, thirty-four million, five hundred one thousand, six hundred twenty-one".