53478365 has 4 divisors (see below), whose sum is σ = 64174044. Its totient is φ = 42782688.

The previous prime is 53478323. The next prime is 53478419. The reversal of 53478365 is 56387435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25999801 + 27478564 = 5099^2 + 5242^2 .

It is a cyclic number.

It is not a de Polignac number, because 53478365 - 2⁶ = 53478301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5347832 + ... + 5347841.

It is an arithmetic number, because the mean of its divisors is an integer number (16043511).

Almost surely, 2^53478365 is an apocalyptic number.

It is an amenable number.

53478365 is a deficient number, since it is larger than the sum of its proper divisors (10695679).

53478365 is a wasteful number, since it uses less digits than its factorization.

53478365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10695678.

The product of its digits is 302400, while the sum is 41.

The square root of 53478365 is about 7312.8903314627. The cubic root of 53478365 is about 376.7553027979.

The spelling of 53478365 in words is "fifty-three million, four hundred seventy-eight thousand, three hundred sixty-five".