54526513 has 4 divisors (see below), whose sum is σ = 55088740. Its totient is φ = 53964288.

The previous prime is 54526481. The next prime is 54526517. The reversal of 54526513 is 31562545.

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 36276529 + 18249984 = 6023^2 + 4272^2 .

It is a cyclic number.

It is not a de Polignac number, because 54526513 - 2⁵ = 54526481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54526517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280968 + ... + 281161.

It is an arithmetic number, because the mean of its divisors is an integer number (13772185).

Almost surely, 2^54526513 is an apocalyptic number.

It is an amenable number.

54526513 is a deficient number, since it is larger than the sum of its proper divisors (562227).

54526513 is an equidigital number, since it uses as much as digits as its factorization.

54526513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562226.

The product of its digits is 18000, while the sum is 31.

The square root of 54526513 is about 7384.2069987237. The cubic root of 54526513 is about 379.2007972389.

The spelling of 54526513 in words is "fifty-four million, five hundred twenty-six thousand, five hundred thirteen".