551278402 has 8 divisors (see below), whose sum is σ = 835105212. Its totient is φ = 272910000.

The previous prime is 551278391. The next prime is 551278439. The reversal of 551278402 is 204872155.

It is a happy number.

551278402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 516243841 + 35034561 = 22721^2 + 5919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1364349 + ... + 1364752.

Almost surely, 2^551278402 is an apocalyptic number.

551278402 is a deficient number, since it is larger than the sum of its proper divisors (283826810).

551278402 is a wasteful number, since it uses less digits than its factorization.

551278402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729204.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 551278402 is about 23479.3186016971. The cubic root of 551278402 is about 819.9555805802.

The spelling of 551278402 in words is "five hundred fifty-one million, two hundred seventy-eight thousand, four hundred two".