54642555 has 48 divisors (see below), whose sum is σ = 105131520. Its totient is φ = 26030400.

The previous prime is 54642527. The next prime is 54642557. The reversal of 54642555 is 55524645.

54642555 is a `hidden beast` number, since 5 + 4 + 642 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 54642555 - 2¹⁵ = 54609787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54642557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28270 + ... + 30140.

It is an arithmetic number, because the mean of its divisors is an integer number (2190240).

Almost surely, 2^54642555 is an apocalyptic number.

54642555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

54642555 is a deficient number, since it is larger than the sum of its proper divisors (50488965).

54642555 is a wasteful number, since it uses less digits than its factorization.

54642555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1949 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 54642555 is about 7392.0602676115. The cubic root of 54642555 is about 379.4696086105.

The spelling of 54642555 in words is "fifty-four million, six hundred forty-two thousand, five hundred fifty-five".