55006131 has 4 divisors (see below), whose sum is σ = 73341512. Its totient is φ = 36670752.

The previous prime is 55006123. The next prime is 55006141. The reversal of 55006131 is 13160055.

It is a happy number.

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

It is not a de Polignac number, because 55006131 - 2³ = 55006123 is a prime.

It is a super-2 number, since 2×55006131² = 6051348895178322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55006098 and 55006107.

It is not an unprimeable number, because it can be changed into a prime (55006141) 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, 9167686 + ... + 9167691.

It is an arithmetic number, because the mean of its divisors is an integer number (18335378).

Almost surely, 2^55006131 is an apocalyptic number.

55006131 is a deficient number, since it is larger than the sum of its proper divisors (18335381).

55006131 is a wasteful number, since it uses less digits than its factorization.

55006131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18335380.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 55006131 is about 7416.6118275126. The cubic root of 55006131 is about 380.3093764005.

Adding to 55006131 its reverse (13160055), we get a palindrome (68166186).

The spelling of 55006131 in words is "fifty-five million, six thousand, one hundred thirty-one".