550557831 has 16 divisors (see below), whose sum is σ = 771148800. Its totient is φ = 348717600.

The previous prime is 550557811. The next prime is 550557857. The reversal of 550557831 is 138755055.

It is not a de Polignac number, because 550557831 - 2¹¹ = 550555783 is a prime.

It is a super-2 number, since 2×550557831² = 606227850550849122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 550557831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550557811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16495 + ... + 37056.

It is an arithmetic number, because the mean of its divisors is an integer number (48196800).

Almost surely, 2^550557831 is an apocalyptic number.

550557831 is a deficient number, since it is larger than the sum of its proper divisors (220590969).

550557831 is a wasteful number, since it uses less digits than its factorization.

550557831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53726.

The product of its (nonzero) digits is 105000, while the sum is 39.

The square root of 550557831 is about 23463.9687819431. The cubic root of 550557831 is about 819.5981726455.

It can be divided in two parts, 5505 and 57831, that added together give a palindrome (63336).

The spelling of 550557831 in words is "five hundred fifty million, five hundred fifty-seven thousand, eight hundred thirty-one".