53458865 has 4 divisors (see below), whose sum is σ = 64150644. Its totient is φ = 42767088.

The previous prime is 53458859. The next prime is 53458879. The reversal of 53458865 is 56885435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56885435 = 5 ⋅11377087.

It can be written as a sum of positive squares in 2 ways, for example, as 36820624 + 16638241 = 6068^2 + 4079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53458865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5345882 + ... + 5345891.

It is an arithmetic number, because the mean of its divisors is an integer number (16037661).

Almost surely, 2^53458865 is an apocalyptic number.

It is an amenable number.

53458865 is a deficient number, since it is larger than the sum of its proper divisors (10691779).

53458865 is a wasteful number, since it uses less digits than its factorization.

53458865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691778.

The product of its digits is 576000, while the sum is 44.

The square root of 53458865 is about 7311.5569477369. The cubic root of 53458865 is about 376.7095047040.

The spelling of 53458865 in words is "fifty-three million, four hundred fifty-eight thousand, eight hundred sixty-five".