53455513 has 4 divisors (see below), whose sum is σ = 54759348. Its totient is φ = 52151680.

The previous prime is 53455489. The next prime is 53455529. The reversal of 53455513 is 31555435.

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 9935104 + 43520409 = 3152^2 + 6597^2 .

It is a cyclic number.

It is not a de Polignac number, because 53455513 - 2¹⁷ = 53324441 is a prime.

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 a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53455573) 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, 651856 + ... + 651937.

It is an arithmetic number, because the mean of its divisors is an integer number (13689837).

Almost surely, 2^53455513 is an apocalyptic number.

It is an amenable number.

53455513 is a deficient number, since it is larger than the sum of its proper divisors (1303835).

53455513 is a wasteful number, since it uses less digits than its factorization.

53455513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303834.

The product of its digits is 22500, while the sum is 31.

The square root of 53455513 is about 7311.3277180003. The cubic root of 53455513 is about 376.7016310074.

The spelling of 53455513 in words is "fifty-three million, four hundred fifty-five thousand, five hundred thirteen".