54257023216513 has 4 divisors (see below), whose sum is σ = 58430640387028. Its totient is φ = 50083406046000.

The previous prime is 54257023216457. The next prime is 54257023216519. The reversal of 54257023216513 is 31561232075245.

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 2621977039504 + 51635046177009 = 1619252^2 + 7185753^2 .

It is a cyclic number.

It is not a de Polignac number, because 54257023216513 - 2⁹ = 54257023216001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54257023216519) 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, 2086808585238 + ... + 2086808585263.

It is an arithmetic number, because the mean of its divisors is an integer number (14607660096757).

Almost surely, 2^{54257023216513} is an apocalyptic number.

It is an amenable number.

54257023216513 is a deficient number, since it is larger than the sum of its proper divisors (4173617170515).

54257023216513 is a wasteful number, since it uses less digits than its factorization.

54257023216513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173617170514.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 54257023216513 in words is "fifty-four trillion, two hundred fifty-seven billion, twenty-three million, two hundred sixteen thousand, five hundred thirteen".