55251131 has 8 divisors (see below), whose sum is σ = 59614800. Its totient is φ = 50903712.

The previous prime is 55251121. The next prime is 55251151. The reversal of 55251131 is 13115255.

It is a happy number.

55251131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55251131 - 2²² = 51056827 is a prime.

It is a super-2 number, since 2×55251131² = 6105374953558322, 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 = 55251097 and 55251106.

It is not an unprimeable number, because it can be changed into a prime (55251121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3545 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (7451850).

Almost surely, 2^55251131 is an apocalyptic number.

55251131 is a deficient number, since it is larger than the sum of its proper divisors (4363669).

55251131 is a wasteful number, since it uses less digits than its factorization.

55251131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125.

The product of its digits is 750, while the sum is 23.

The square root of 55251131 is about 7433.1104525629. The cubic root of 55251131 is about 380.8731790185.

Adding to 55251131 its reverse (13115255), we get a palindrome (68366386).

The spelling of 55251131 in words is "fifty-five million, two hundred fifty-one thousand, one hundred thirty-one".