551001004 has 12 divisors (see below), whose sum is σ = 971189800. Its totient is φ = 273518208.

The previous prime is 551000987. The next prime is 551001049. The reversal of 551001004 is 400100155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494949 + ... + 496060.

Almost surely, 2^551001004 is an apocalyptic number.

It is an amenable number.

551001004 is a deficient number, since it is larger than the sum of its proper divisors (420188796).

551001004 is a wasteful number, since it uses less digits than its factorization.

551001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991152 (or 991150 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 551001004 is about 23473.4105745203. The cubic root of 551001004 is about 819.8180262465.

Adding to 551001004 its reverse (400100155), we get a palindrome (951101159).

The spelling of 551001004 in words is "five hundred fifty-one million, one thousand, four".