53012618 has 4 divisors (see below), whose sum is σ = 79518930. Its totient is φ = 26506308.

The previous prime is 53012591. The next prime is 53012633. The reversal of 53012618 is 81621035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81621035 = 5 ⋅16324207.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 840889 = 7223^2 + 917^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13253153 + ... + 13253156.

Almost surely, 2^53012618 is an apocalyptic number.

53012618 is a deficient number, since it is larger than the sum of its proper divisors (26506312).

53012618 is a wasteful number, since it uses less digits than its factorization.

53012618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26506311.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 53012618 is about 7280.9764455051. The cubic root of 53012618 is about 375.6583823736.

The spelling of 53012618 in words is "fifty-three million, twelve thousand, six hundred eighteen".