551600138 has 4 divisors (see below), whose sum is σ = 827400210. Its totient is φ = 275800068.

The previous prime is 551600117. The next prime is 551600141. The reversal of 551600138 is 831006155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 535783609 + 15816529 = 23147^2 + 3977^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551600138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137900033 + ... + 137900036.

Almost surely, 2^551600138 is an apocalyptic number.

551600138 is a deficient number, since it is larger than the sum of its proper divisors (275800072).

551600138 is a wasteful number, since it uses less digits than its factorization.

551600138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275800071.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 551600138 is about 23486.1690788430. The cubic root of 551600138 is about 820.1150631713.

The spelling of 551600138 in words is "five hundred fifty-one million, six hundred thousand, one hundred thirty-eight".