553512231 has 64 divisors (see below), whose sum is σ = 901549440. Its totient is φ = 334264320.

The previous prime is 553512221. The next prime is 553512233. The reversal of 553512231 is 132215355.

It is a happy number.

553512231 is a `hidden beast` number, since 5 + 535 + 122 + 3 + 1 = 666.

It is not a de Polignac number, because 553512231 - 2⁷ = 553512103 is a prime.

It is a super-2 number, since 2×553512231² = 612751579733194722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 553512195 and 553512204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553512233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1483761 + ... + 1484133.

It is an arithmetic number, because the mean of its divisors is an integer number (14086710).

Almost surely, 2^553512231 is an apocalyptic number.

553512231 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

553512231 is a deficient number, since it is larger than the sum of its proper divisors (348037209).

553512231 is a wasteful number, since it uses less digits than its factorization.

553512231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 507 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 553512231 is about 23526.8406506271. The cubic root of 553512231 is about 821.0615989503.

Adding to 553512231 its reverse (132215355), we get a palindrome (685727586).

It can be divided in two parts, 5535 and 12231, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 553512231 in words is "five hundred fifty-three million, five hundred twelve thousand, two hundred thirty-one".