53197986 has 16 divisors (see below), whose sum is σ = 111996000. Its totient is φ = 16799328.

The previous prime is 53197973. The next prime is 53197987. The reversal of 53197986 is 68979135.

It is not an unprimeable number, because it can be changed into a prime (53197987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233211 + ... + 233438.

It is an arithmetic number, because the mean of its divisors is an integer number (6999750).

Almost surely, 2^53197986 is an apocalyptic number.

53197986 is an abundant number, since it is smaller than the sum of its proper divisors (58798014).

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

53197986 is a wasteful number, since it uses less digits than its factorization.

53197986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466673.

The product of its digits is 408240, while the sum is 48.

The square root of 53197986 is about 7293.6949483784. The cubic root of 53197986 is about 376.0957250239.

The spelling of 53197986 in words is "fifty-three million, one hundred ninety-seven thousand, nine hundred eighty-six".