551206402 has 16 divisors (see below), whose sum is σ = 877490712. Its totient is φ = 258785280.

The previous prime is 551206399. The next prime is 551206423. The reversal of 551206402 is 204602155.

It can be written as a sum of positive squares in 4 ways, for example, as 446941881 + 104264521 = 21141^2 + 10211^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999 + ... + 33442.

Almost surely, 2^551206402 is an apocalyptic number.

551206402 is a deficient number, since it is larger than the sum of its proper divisors (326284310).

551206402 is a wasteful number, since it uses less digits than its factorization.

551206402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37893.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 551206402 is about 23477.7852873733. The cubic root of 551206402 is about 819.9198821188.

Adding to 551206402 its reverse (204602155), we get a palindrome (755808557).

The spelling of 551206402 in words is "five hundred fifty-one million, two hundred six thousand, four hundred two".