551242104 has 128 divisors (see below), whose sum is σ = 1652244480. Its totient is φ = 149846400.

The previous prime is 551242099. The next prime is 551242129. The reversal of 551242104 is 401242155.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278769 + ... + 1279199.

It is an arithmetic number, because the mean of its divisors is an integer number (12908160).

Almost surely, 2^551242104 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 551242104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826122240).

551242104 is an abundant number, since it is smaller than the sum of its proper divisors (1101002376).

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

551242104 is a wasteful number, since it uses less digits than its factorization.

551242104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 551242104 is about 23478.5456108337. The cubic root of 551242104 is about 819.9375839861.

Adding to 551242104 its reverse (401242155), we get a palindrome (952484259).

The spelling of 551242104 in words is "five hundred fifty-one million, two hundred forty-two thousand, one hundred four".