55140045 has 16 divisors (see below), whose sum is σ = 89007552. Its totient is φ = 29146880.

The previous prime is 55140037. The next prime is 55140047. The reversal of 55140045 is 54004155.

It is not a de Polignac number, because 55140045 - 2³ = 55140037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55139997 and 55140024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55140047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14571 + ... + 17960.

It is an arithmetic number, because the mean of its divisors is an integer number (5562972).

Almost surely, 2^55140045 is an apocalyptic number.

It is an amenable number.

55140045 is a deficient number, since it is larger than the sum of its proper divisors (33867507).

55140045 is a wasteful number, since it uses less digits than its factorization.

55140045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32652.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55140045 is about 7425.6343163396. The cubic root of 55140045 is about 380.6177509735.

The spelling of 55140045 in words is "fifty-five million, one hundred forty thousand, forty-five".