55028131 has 8 divisors (see below), whose sum is σ = 56945664. Its totient is φ = 53119560.

The previous prime is 55028107. The next prime is 55028137. The reversal of 55028131 is 13182055.

It is a happy number.

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 55028131 - 2¹⁵ = 54995363 is a prime.

It is a super-2 number, since 2×55028131² = 6056190402706322, 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 = 55028096 and 55028105.

It is not an unprimeable number, because it can be changed into a prime (55028137) 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, 11730 + ... + 15736.

It is an arithmetic number, because the mean of its divisors is an integer number (7118208).

Almost surely, 2^55028131 is an apocalyptic number.

55028131 is a deficient number, since it is larger than the sum of its proper divisors (1917533).

55028131 is a wasteful number, since it uses less digits than its factorization.

55028131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 55028131 is about 7418.0948362770. The cubic root of 55028131 is about 380.3600719074.

The spelling of 55028131 in words is "fifty-five million, twenty-eight thousand, one hundred thirty-one".