54121616 has 20 divisors (see below), whose sum is σ = 106299372. Its totient is φ = 26689536.

The previous prime is 54121601. The next prime is 54121619. The reversal of 54121616 is 61612145.

It can be written as a sum of positive squares in 2 ways, for example, as 27081616 + 27040000 = 5204^2 + 5200^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54121619) 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, 22001 + ... + 24336.

Almost surely, 2^54121616 is an apocalyptic number.

It is an amenable number.

54121616 is a deficient number, since it is larger than the sum of its proper divisors (52177756).

54121616 is a wasteful number, since it uses less digits than its factorization.

54121616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46418 (or 46412 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 54121616 is about 7356.7394951840. The cubic root of 54121616 is about 378.2598551027.

The spelling of 54121616 in words is "fifty-four million, one hundred twenty-one thousand, six hundred sixteen".