5551212131 has 8 divisors (see below), whose sum is σ = 5577284160. Its totient is φ = 5525164288.

The previous prime is 5551212077. The next prime is 5551212137. The reversal of 5551212131 is 1312121555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551212131 is a prime.

It is a super-2 number, since 2×5551212131² = 61631912246723122322, which contains 22 as substring.

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 5551212131.

It is not an unprimeable number, because it can be changed into a prime (5551212137) 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, 587315 + ... + 596691.

It is an arithmetic number, because the mean of its divisors is an integer number (697160520).

Almost surely, 2^5551212131 is an apocalyptic number.

5551212131 is a deficient number, since it is larger than the sum of its proper divisors (26072029).

5551212131 is a wasteful number, since it uses less digits than its factorization.

5551212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12093.

The product of its digits is 1500, while the sum is 26.

The square root of 5551212131 is about 74506.4569752179. The cubic root of 5551212131 is about 1770.6359372353.

Adding to 5551212131 its reverse (1312121555), we get a palindrome (6863333686).

The spelling of 5551212131 in words is "five billion, five hundred fifty-one million, two hundred twelve thousand, one hundred thirty-one".