54552012021 has 12 divisors (see below), whose sum is σ = 84858685548. Its totient is φ = 33570468864.

The previous prime is 54552011999. The next prime is 54552012023. The reversal of 54552012021 is 12021025545.

54552012021 is a `hidden beast` number, since 5 + 455 + 2 + 0 + 1 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11510285796 + 43041726225 = 107286^2 + 207465^2 .

It is not a de Polignac number, because 54552012021 - 2⁵ = 54552011989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54552012023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233128140 + ... + 233128373.

It is an arithmetic number, because the mean of its divisors is an integer number (7071557129).

Almost surely, 2^54552012021 is an apocalyptic number.

It is an amenable number.

54552012021 is a deficient number, since it is larger than the sum of its proper divisors (30306673527).

54552012021 is a wasteful number, since it uses less digits than its factorization.

54552012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466256532 (or 466256529 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 54552012021 its reverse (12021025545), we get a palindrome (66573037566).

The spelling of 54552012021 in words is "fifty-four billion, five hundred fifty-two million, twelve thousand, twenty-one".