551105004 has 24 divisors (see below), whose sum is σ = 1286511408. Its totient is φ = 183616000.

The previous prime is 551104993. The next prime is 551105039. The reversal of 551105004 is 400501155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19504 + ... + 38504.

It is an arithmetic number, because the mean of its divisors is an integer number (53604642).

Almost surely, 2^551105004 is an apocalyptic number.

It is an amenable number.

551105004 is an abundant number, since it is smaller than the sum of its proper divisors (735406404).

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

551105004 is a wasteful number, since it uses less digits than its factorization.

551105004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21425 (or 21423 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 551105004 is about 23475.6257424589. The cubic root of 551105004 is about 819.8696025053.

Adding to 551105004 its reverse (400501155), we get a palindrome (951606159).

The spelling of 551105004 in words is "five hundred fifty-one million, one hundred five thousand, four".