551951065 has 4 divisors (see below), whose sum is σ = 662341284. Its totient is φ = 441560848.

The previous prime is 551951051. The next prime is 551951093. The reversal of 551951065 is 560159155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560159155 = 5 ⋅112031831.

It can be written as a sum of positive squares in 2 ways, for example, as 284563161 + 267387904 = 16869^2 + 16352^2 .

It is a cyclic number.

It is not a de Polignac number, because 551951065 - 2⁷ = 551950937 is a prime.

It is a Duffinian 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, 55195102 + ... + 55195111.

It is an arithmetic number, because the mean of its divisors is an integer number (165585321).

Almost surely, 2^551951065 is an apocalyptic number.

It is an amenable number.

551951065 is a deficient number, since it is larger than the sum of its proper divisors (110390219).

551951065 is a wasteful number, since it uses less digits than its factorization.

551951065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110390218.

The product of its (nonzero) digits is 33750, while the sum is 37.

The square root of 551951065 is about 23493.6388199019. The cubic root of 551951065 is about 820.2889448704.

The spelling of 551951065 in words is "five hundred fifty-one million, nine hundred fifty-one thousand, sixty-five".