551269069 has 4 divisors (see below), whose sum is σ = 593674396. Its totient is φ = 508863744.

The previous prime is 551269051. The next prime is 551269079. The reversal of 551269069 is 960962155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 133679844 + 417589225 = 11562^2 + 20435^2 .

It is a cyclic number.

It is not a de Polignac number, because 551269069 - 2⁷ = 551268941 is a prime.

It is a super-2 number, since 2×551269069² = 607795172872253522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551269049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21202644 + ... + 21202669.

It is an arithmetic number, because the mean of its divisors is an integer number (148418599).

Almost surely, 2^551269069 is an apocalyptic number.

It is an amenable number.

551269069 is a deficient number, since it is larger than the sum of its proper divisors (42405327).

551269069 is a wasteful number, since it uses less digits than its factorization.

551269069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42405326.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 551269069 is about 23479.1198514765. The cubic root of 551269069 is about 819.9509533425.

The spelling of 551269069 in words is "five hundred fifty-one million, two hundred sixty-nine thousand, sixty-nine".