551136124 has 108 divisors (see below), whose sum is σ = 1306721808. Its totient is φ = 201949440.

The previous prime is 551136109. The next prime is 551136133. The reversal of 551136124 is 421631155.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 551136092 and 551136101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 402489 + ... + 403855.

It is an arithmetic number, because the mean of its divisors is an integer number (12099276).

Almost surely, 2^551136124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551136124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653360904).

551136124 is an abundant number, since it is smaller than the sum of its proper divisors (755585684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551136124 is a wasteful number, since it uses less digits than its factorization.

551136124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1404 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 551136124 is about 23476.2885482352. The cubic root of 551136124 is about 819.8850344475.

Adding to 551136124 its reverse (421631155), we get a palindrome (972767279).

The spelling of 551136124 in words is "five hundred fifty-one million, one hundred thirty-six thousand, one hundred twenty-four".