55140024 has 32 divisors (see below), whose sum is σ = 140785920. Its totient is φ = 17988576.

The previous prime is 55140023. The next prime is 55140031. The reversal of 55140024 is 42004155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55140023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23314 + ... + 25569.

It is an arithmetic number, because the mean of its divisors is an integer number (4399560).

Almost surely, 2^55140024 is an apocalyptic number.

It is an amenable number.

55140024 is an abundant number, since it is smaller than the sum of its proper divisors (85645896).

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

55140024 is a wasteful number, since it uses less digits than its factorization.

55140024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48939 (or 48935 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55140024 is about 7425.6329023188. The cubic root of 55140024 is about 380.6177026543.

Adding to 55140024 its reverse (42004155), we get a palindrome (97144179).

The spelling of 55140024 in words is "fifty-five million, one hundred forty thousand, twenty-four".