55461131 has 4 divisors (see below), whose sum is σ = 60503064. Its totient is φ = 50419200.

The previous prime is 55461127. The next prime is 55461143. The reversal of 55461131 is 13116455.

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 55461131 - 2² = 55461127 is a prime.

It is a super-3 number, since 3×55461131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55461131.

It is not an unprimeable number, because it can be changed into a prime (55461031) 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, 2520950 + ... + 2520971.

It is an arithmetic number, because the mean of its divisors is an integer number (15125766).

Almost surely, 2^55461131 is an apocalyptic number.

55461131 is a deficient number, since it is larger than the sum of its proper divisors (5041933).

55461131 is a wasteful number, since it uses less digits than its factorization.

55461131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041932.

The product of its digits is 1800, while the sum is 26.

The square root of 55461131 is about 7447.2230394960. The cubic root of 55461131 is about 381.3551133263.

Adding to 55461131 its reverse (13116455), we get a palindrome (68577586).

The spelling of 55461131 in words is "fifty-five million, four hundred sixty-one thousand, one hundred thirty-one".