53509068 has 18 divisors (see below), whose sum is σ = 135259124. Its totient is φ = 17836344.

The previous prime is 53509019. The next prime is 53509087. The reversal of 53509068 is 86090535.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1486363 = 53509068 / (5 + 3 + 5 + 0 + 9 + 0 + 6 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743146 + ... + 743217.

Almost surely, 2^53509068 is an apocalyptic number.

It is an amenable number.

53509068 is an abundant number, since it is smaller than the sum of its proper divisors (81750056).

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

53509068 is a wasteful number, since it uses less digits than its factorization.

53509068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486373 (or 1486368 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 53509068 is about 7314.9892686182. The cubic root of 53509068 is about 376.8273899248.

The spelling of 53509068 in words is "fifty-three million, five hundred nine thousand, sixty-eight".