53005969 has 4 divisors (see below), whose sum is σ = 53087796. Its totient is φ = 52924144.

The previous prime is 53005951. The next prime is 53005999. The reversal of 53005969 is 96950035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12873744 + 40132225 = 3588^2 + 6335^2 .

It is a cyclic number.

It is not a de Polignac number, because 53005969 - 2²¹ = 50908817 is a prime.

It is a super-2 number, since 2×53005969² = 5619265499257922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53005999) 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, 39934 + ... + 41239.

It is an arithmetic number, because the mean of its divisors is an integer number (13271949).

Almost surely, 2^53005969 is an apocalyptic number.

It is an amenable number.

53005969 is a deficient number, since it is larger than the sum of its proper divisors (81827).

53005969 is an equidigital number, since it uses as much as digits as its factorization.

53005969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81826.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 53005969 is about 7280.5198303418. The cubic root of 53005969 is about 375.6426763202.

The spelling of 53005969 in words is "fifty-three million, five thousand, nine hundred sixty-nine".