55126887 has 4 divisors (see below), whose sum is σ = 73502520. Its totient is φ = 36751256.

The previous prime is 55126829. The next prime is 55126889. The reversal of 55126887 is 78862155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55126887 - 2⁷ = 55126759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55126889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9187812 + ... + 9187817.

It is an arithmetic number, because the mean of its divisors is an integer number (18375630).

Almost surely, 2^55126887 is an apocalyptic number.

55126887 is a deficient number, since it is larger than the sum of its proper divisors (18375633).

55126887 is a wasteful number, since it uses less digits than its factorization.

55126887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18375632.

The product of its digits is 134400, while the sum is 42.

The square root of 55126887 is about 7424.7482785614. The cubic root of 55126887 is about 380.5874731190.

The spelling of 55126887 in words is "fifty-five million, one hundred twenty-six thousand, eight hundred eighty-seven".