53899897 has 6 divisors (see below), whose sum is σ = 54171402. Its totient is φ = 53629632.

The previous prime is 53899889. The next prime is 53899921. The reversal of 53899897 is 79899835.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 11532816 = 6509^2 + 3396^2 .

It is not a de Polignac number, because 53899897 - 2³ = 53899889 is a prime.

It is a super-2 number, since 2×53899897² = 5810397793221218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53899847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79753 + ... + 80425.

It is an arithmetic number, because the mean of its divisors is an integer number (9028567).

Almost surely, 2^53899897 is an apocalyptic number.

It is an amenable number.

53899897 is a deficient number, since it is larger than the sum of its proper divisors (271505).

53899897 is an frugal number, since it uses more digits than its factorization.

53899897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 956 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 58.

The square root of 53899897 is about 7341.6549224272. The cubic root of 53899897 is about 377.7426114677.

The spelling of 53899897 in words is "fifty-three million, eight hundred ninety-nine thousand, eight hundred ninety-seven".