54120555 has 20 divisors (see below), whose sum is σ = 97016832. Its totient is φ = 28864080.

The previous prime is 54120553. The next prime is 54120557. The reversal of 54120555 is 55502145.

It is an interprime number because it is at equal distance from previous prime (54120553) and next prime (54120557).

It is not a de Polignac number, because 54120555 - 2¹ = 54120553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (54120551) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 66411 + ... + 67220.

Almost surely, 2^54120555 is an apocalyptic number.

54120555 is a deficient number, since it is larger than the sum of its proper divisors (42896277).

54120555 is a wasteful number, since it uses less digits than its factorization.

54120555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133648 (or 133639 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 54120555 is about 7356.6673840809. The cubic root of 54120555 is about 378.2573832848.

The spelling of 54120555 in words is "fifty-four million, one hundred twenty thousand, five hundred fifty-five".