54915939 has 12 divisors (see below), whose sum is σ = 85424976. Its totient is φ = 33794352.

The previous prime is 54915923. The next prime is 54915941. The reversal of 54915939 is 93951945.

It is a happy number.

54915939 is a `hidden beast` number, since 54 + 9 + 1 + 593 + 9 = 666.

It is not a de Polignac number, because 54915939 - 2⁴ = 54915923 is a prime.

It is a super-3 number, since 3×54915939³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 54915894 and 54915903.

It is not an unprimeable number, because it can be changed into a prime (54915919) 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, 234567 + ... + 234800.

It is an arithmetic number, because the mean of its divisors is an integer number (7118748).

Almost surely, 2^54915939 is an apocalyptic number.

54915939 is a deficient number, since it is larger than the sum of its proper divisors (30509037).

54915939 is a wasteful number, since it uses less digits than its factorization.

54915939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469386 (or 469383 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 54915939 is about 7410.5289284909. The cubic root of 54915939 is about 380.1014018400.

The spelling of 54915939 in words is "fifty-four million, nine hundred fifteen thousand, nine hundred thirty-nine".