53109999 has 20 divisors (see below), whose sum is σ = 79543464. Its totient is φ = 35314704.

The previous prime is 53109983. The next prime is 53110019. The reversal of 53109999 is 99990135.

It is not a de Polignac number, because 53109999 - 2⁴ = 53109983 is a prime.

53109999 is a modest number, since divided by 9999 gives 5310 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53109299) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46989 + ... + 48105.

Almost surely, 2^53109999 is an apocalyptic number.

53109999 is a deficient number, since it is larger than the sum of its proper divisors (26433465).

53109999 is a wasteful number, since it uses less digits than its factorization.

53109999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 45.

The square root of 53109999 is about 7287.6607357917. The cubic root of 53109999 is about 375.8882623122. Note that the first 3 decimals are identical.

The spelling of 53109999 in words is "fifty-three million, one hundred nine thousand, nine hundred ninety-nine".