53520618 has 8 divisors (see below), whose sum is σ = 107041248. Its totient is φ = 17840204.

The previous prime is 53520613. The next prime is 53520629. The reversal of 53520618 is 81602535.

It is a sphenic number, since it is the product of 3 distinct primes.

53520618 is an admirable number.

It is a super-2 number, since 2×53520618² = 5728913102203848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53520613) 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, 4460046 + ... + 4460057.

It is an arithmetic number, because the mean of its divisors is an integer number (13380156).

Almost surely, 2^53520618 is an apocalyptic number.

53520618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53520618 is a wasteful number, since it uses less digits than its factorization.

53520618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8920108.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 53520618 is about 7315.7787008630. The cubic root of 53520618 is about 376.8545008638.

The spelling of 53520618 in words is "fifty-three million, five hundred twenty thousand, six hundred eighteen".