54140140 has 12 divisors (see below), whose sum is σ = 113694336. Its totient is φ = 21656048.

The previous prime is 54140117. The next prime is 54140143. The reversal of 54140140 is 4104145.

It is not an unprimeable number, because it can be changed into a prime (54140143) 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, 1353484 + ... + 1353523.

It is an arithmetic number, because the mean of its divisors is an integer number (9474528).

Almost surely, 2^54140140 is an apocalyptic number.

It is an amenable number.

54140140 is an abundant number, since it is smaller than the sum of its proper divisors (59554196).

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

54140140 is a wasteful number, since it uses less digits than its factorization.

54140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707016 (or 2707014 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 54140140 is about 7357.9983691219. The cubic root of 54140140 is about 378.3030053682.

Adding to 54140140 its reverse (4104145), we get a palindrome (58244285).

The spelling of 54140140 in words is "fifty-four million, one hundred forty thousand, one hundred forty".