551465 has 8 divisors (see below), whose sum is σ = 674568. Its totient is φ = 432640.

The previous prime is 551461. The next prime is 551483. The reversal of 551465 is 564155.

It can be written as a sum of positive squares in 4 ways, for example, as 73984 + 477481 = 272^2 + 691^2 .

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

It is not a de Polignac number, because 551465 - 2² = 551461 is a prime.

It is a super-2 number, since 2×551465² = 608227292450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (84321).

2⁵⁵¹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

551465 is a deficient number, since it is larger than the sum of its proper divisors (123103).

551465 is a wasteful number, since it uses less digits than its factorization.

551465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its digits is 3000, while the sum is 26.

The square root of 551465 is about 742.6068946623. The cubic root of 551465 is about 82.0048083637.

The spelling of 551465 in words is "five hundred fifty-one thousand, four hundred sixty-five".