551404432131 has 32 divisors (see below), whose sum is σ = 846652996608. Its totient is φ = 312685833600.

The previous prime is 551404432121. The next prime is 551404432133. The reversal of 551404432131 is 131234404155.

It is not a de Polignac number, because 551404432131 - 2¹³ = 551404423939 is a prime.

It is a super-2 number, since 2×551404432131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551404432092 and 551404432101.

It is not an unprimeable number, because it can be changed into a prime (551404432133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3074281 + ... + 3248693.

It is an arithmetic number, because the mean of its divisors is an integer number (26457906144).

Almost surely, 2^551404432131 is an apocalyptic number.

551404432131 is a deficient number, since it is larger than the sum of its proper divisors (295248564477).

551404432131 is a wasteful number, since it uses less digits than its factorization.

551404432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175571.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 551404432131 its reverse (131234404155), we get a palindrome (682638836286).

The spelling of 551404432131 in words is "five hundred fifty-one billion, four hundred four million, four hundred thirty-two thousand, one hundred thirty-one".