54216155521061 has 4 divisors (see below), whose sum is σ = 54219835948224. Its totient is φ = 54212475093900.

The previous prime is 54216155521057. The next prime is 54216155521067. The reversal of 54216155521061 is 16012555161245.

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.

It is a cyclic number.

It is not a de Polignac number, because 54216155521061 - 2² = 54216155521057 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 (54216155521067) 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, 1840191485 + ... + 1840220946.

It is an arithmetic number, because the mean of its divisors is an integer number (13554958987056).

Almost surely, 2^{54216155521061} is an apocalyptic number.

It is an amenable number.

54216155521061 is a deficient number, since it is larger than the sum of its proper divisors (3680427163).

54216155521061 is a wasteful number, since it uses less digits than its factorization.

54216155521061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680427162.

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 54216155521061 in words is "fifty-four trillion, two hundred sixteen billion, one hundred fifty-five million, five hundred twenty-one thousand, sixty-one".