53219985 has 64 divisors (see below), whose sum is σ = 105971712. Its totient is φ = 22208256.

The previous prime is 53219977. The next prime is 53219987. The reversal of 53219985 is 58991235.

It is not a de Polignac number, because 53219985 - 2³ = 53219977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53219987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173202 + ... + 173508.

It is an arithmetic number, because the mean of its divisors is an integer number (1655808).

Almost surely, 2^53219985 is an apocalyptic number.

It is an amenable number.

53219985 is a deficient number, since it is larger than the sum of its proper divisors (52751727).

53219985 is a wasteful number, since it uses less digits than its factorization.

53219985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462.

The product of its digits is 97200, while the sum is 42.

The square root of 53219985 is about 7295.2028758630. The cubic root of 53219985 is about 376.1475602546.

The spelling of 53219985 in words is "fifty-three million, two hundred nineteen thousand, nine hundred eighty-five".