5156554465 has 4 divisors (see below), whose sum is σ = 6187865364. Its totient is φ = 4125243568.

The previous prime is 5156554463. The next prime is 5156554499. The reversal of 5156554465 is 5644556515.

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 2 ways, for example, as 3972024576 + 1184529889 = 63024^2 + 34417^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156554465 - 2¹ = 5156554463 is a prime.

It is a super-2 number, since 2×5156554465² = 53180107901022872450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5156554463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515655442 + ... + 515655451.

It is an arithmetic number, because the mean of its divisors is an integer number (1546966341).

Almost surely, 2^5156554465 is an apocalyptic number.

It is an amenable number.

5156554465 is a deficient number, since it is larger than the sum of its proper divisors (1031310899).

5156554465 is a wasteful number, since it uses less digits than its factorization.

5156554465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031310898.

The product of its digits is 1800000, while the sum is 46.

The square root of 5156554465 is about 71809.1530725715. The cubic root of 5156554465 is about 1727.6398105832.

It can be divided in two parts, 51565 and 54465, that added together give a triangular number (106030 = T₄₆₀).

The spelling of 5156554465 in words is "five billion, one hundred fifty-six million, five hundred fifty-four thousand, four hundred sixty-five".