53540818 has 4 divisors (see below), whose sum is σ = 80311230. Its totient is φ = 26770408.

The previous prime is 53540791. The next prime is 53540819. The reversal of 53540818 is 81804535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81804535 = 5 ⋅16360907.

It can be written as a sum of positive squares in only one way, i.e., 39350529 + 14190289 = 6273^2 + 3767^2 .

It is not an unprimeable number, because it can be changed into a prime (53540819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13385203 + ... + 13385206.

Almost surely, 2^53540818 is an apocalyptic number.

53540818 is a deficient number, since it is larger than the sum of its proper divisors (26770412).

53540818 is a wasteful number, since it uses less digits than its factorization.

53540818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26770411.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 53540818 is about 7317.1591481941. The cubic root of 53540818 is about 376.9019062918.

The spelling of 53540818 in words is "fifty-three million, five hundred forty thousand, eight hundred eighteen".