551064442 has 4 divisors (see below), whose sum is σ = 826596666. Its totient is φ = 275532220.

The previous prime is 551064439. The next prime is 551064461. The reversal of 551064442 is 244460155.

It is a happy number.

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., 457574881 + 93489561 = 21391^2 + 9669^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137766109 + ... + 137766112.

Almost surely, 2^551064442 is an apocalyptic number.

551064442 is a deficient number, since it is larger than the sum of its proper divisors (275532224).

551064442 is a wasteful number, since it uses less digits than its factorization.

551064442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275532223.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 551064442 is about 23474.7618092282. The cubic root of 551064442 is about 819.8494875444.

The spelling of 551064442 in words is "five hundred fifty-one million, sixty-four thousand, four hundred forty-two".