54121140 has 36 divisors (see below), whose sum is σ = 164168004. Its totient is φ = 14432256.

The previous prime is 54121127. The next prime is 54121169. The reversal of 54121140 is 4112145.

It can be written as a sum of positive squares in 2 ways, for example, as 18766224 + 35354916 = 4332^2 + 5946^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150157 + ... + 150516.

Almost surely, 2^54121140 is an apocalyptic number.

It is an amenable number.

54121140 is an abundant number, since it is smaller than the sum of its proper divisors (110046864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54121140 is a wasteful number, since it uses less digits than its factorization.

54121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300688 (or 300683 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 54121140 is about 7356.7071438246. The cubic root of 54121140 is about 378.2587461667.

Adding to 54121140 its reverse (4112145), we get a palindrome (58233285).

The spelling of 54121140 in words is "fifty-four million, one hundred twenty-one thousand, one hundred forty".