55140837 has 4 divisors (see below), whose sum is σ = 73521120. Its totient is φ = 36760556.

The previous prime is 55140817. The next prime is 55140853. The reversal of 55140837 is 73804155.

55140837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55140837 - 2⁸ = 55140581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55140798 and 55140807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55140817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9190137 + ... + 9190142.

It is an arithmetic number, because the mean of its divisors is an integer number (18380280).

Almost surely, 2^55140837 is an apocalyptic number.

It is an amenable number.

55140837 is a deficient number, since it is larger than the sum of its proper divisors (18380283).

55140837 is a wasteful number, since it uses less digits than its factorization.

55140837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380282.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 55140837 is about 7425.6876449256. The cubic root of 55140837 is about 380.6195732898.

The spelling of 55140837 in words is "fifty-five million, one hundred forty thousand, eight hundred thirty-seven".