55140355 has 8 divisors (see below), whose sum is σ = 66248352. Its totient is φ = 44059008.

The previous prime is 55140347. The next prime is 55140359. The reversal of 55140355 is 55304155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55140355 - 2³ = 55140347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55140359) 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, 1782 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (8281044).

Almost surely, 2^55140355 is an apocalyptic number.

55140355 is a deficient number, since it is larger than the sum of its proper divisors (11107997).

55140355 is a wasteful number, since it uses less digits than its factorization.

55140355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13325.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55140355 is about 7425.6551899479. The cubic root of 55140355 is about 380.6184642560.

The spelling of 55140355 in words is "fifty-five million, one hundred forty thousand, three hundred fifty-five".