53078865 has 16 divisors (see below), whose sum is σ = 97058688. Its totient is φ = 24264576.

The previous prime is 53078863. The next prime is 53078867. The reversal of 53078865 is 56887035.

It is an interprime number because it is at equal distance from previous prime (53078863) and next prime (53078867).

It is not a de Polignac number, because 53078865 - 2¹ = 53078863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53078863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252652 + ... + 252861.

It is an arithmetic number, because the mean of its divisors is an integer number (6066168).

Almost surely, 2^53078865 is an apocalyptic number.

It is an amenable number.

53078865 is a deficient number, since it is larger than the sum of its proper divisors (43979823).

53078865 is a wasteful number, since it uses less digits than its factorization.

53078865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505528.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 53078865 is about 7285.5243462636. The cubic root of 53078865 is about 375.8147972213.

The spelling of 53078865 in words is "fifty-three million, seventy-eight thousand, eight hundred sixty-five".