53149689 has 12 divisors (see below), whose sum is σ = 79615536. Its totient is φ = 35432964.

The previous prime is 53149673. The next prime is 53149697. The reversal of 53149689 is 98694135.

It is a happy number.

It is not a de Polignac number, because 53149689 - 2⁴ = 53149673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53149609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109119 + ... + 109604.

It is an arithmetic number, because the mean of its divisors is an integer number (6634628).

Almost surely, 2^53149689 is an apocalyptic number.

It is an amenable number.

53149689 is a deficient number, since it is larger than the sum of its proper divisors (26465847).

53149689 is an equidigital number, since it uses as much as digits as its factorization.

53149689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218738 (or 218726 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 53149689 is about 7290.3833232554. The cubic root of 53149689 is about 375.9818748808.

The spelling of 53149689 in words is "fifty-three million, one hundred forty-nine thousand, six hundred eighty-nine".