55142255 has 16 divisors (see below), whose sum is σ = 75768384. Its totient is φ = 37739520.

The previous prime is 55142251. The next prime is 55142261. The reversal of 55142255 is 55224155.

It is not a de Polignac number, because 55142255 - 2² = 55142251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142251) 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, 22385 + ... + 24725.

It is an arithmetic number, because the mean of its divisors is an integer number (4735524).

Almost surely, 2^55142255 is an apocalyptic number.

55142255 is a deficient number, since it is larger than the sum of its proper divisors (20626129).

55142255 is a wasteful number, since it uses less digits than its factorization.

55142255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026.

The product of its digits is 10000, while the sum is 29.

The square root of 55142255 is about 7425.7831236847. The cubic root of 55142255 is about 380.6228359288.

The spelling of 55142255 in words is "fifty-five million, one hundred forty-two thousand, two hundred fifty-five".