54553220025621 has 16 divisors (see below), whose sum is σ = 73001278099968. Its totient is φ = 36237222428400.

The previous prime is 54553220025599. The next prime is 54553220025637. The reversal of 54553220025621 is 12652002235545.

It is not a de Polignac number, because 54553220025621 - 2⁵ = 54553220025589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54553220025641) 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, 28417171 + ... + 30276096.

It is an arithmetic number, because the mean of its divisors is an integer number (4562579881248).

Almost surely, 2^{54553220025621} is an apocalyptic number.

It is an amenable number.

54553220025621 is a deficient number, since it is larger than the sum of its proper divisors (18448058074347).

54553220025621 is a wasteful number, since it uses less digits than its factorization.

54553220025621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58694392.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 54553220025621 in words is "fifty-four trillion, five hundred fifty-three billion, two hundred twenty million, twenty-five thousand, six hundred twenty-one".