55142959 has 16 divisors (see below), whose sum is σ = 59673600. Its totient is φ = 50798016.

The previous prime is 55142933. The next prime is 55142977. The reversal of 55142959 is 95924155.

55142959 is nontrivially palindromic in base 15.

It is a cyclic number.

It is not a de Polignac number, because 55142959 - 2⁹ = 55142447 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 (55142929) 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, 114882 + ... + 115360.

It is an arithmetic number, because the mean of its divisors is an integer number (3729600).

Almost surely, 2^55142959 is an apocalyptic number.

55142959 is a deficient number, since it is larger than the sum of its proper divisors (4530641).

55142959 is a wasteful number, since it uses less digits than its factorization.

55142959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its digits is 81000, while the sum is 40.

The square root of 55142959 is about 7425.8305259412. The cubic root of 55142959 is about 380.6244557231.

The spelling of 55142959 in words is "fifty-five million, one hundred forty-two thousand, nine hundred fifty-nine".