53978315 has 8 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 40642432.

The previous prime is 53978311. The next prime is 53978321. The reversal of 53978315 is 51387935.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53978315 - 2² = 53978311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53978311) 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, 317435 + ... + 317604.

It is an arithmetic number, because the mean of its divisors is an integer number (8573040).

Almost surely, 2^53978315 is an apocalyptic number.

53978315 is a deficient number, since it is larger than the sum of its proper divisors (14606005).

53978315 is a wasteful number, since it uses less digits than its factorization.

53978315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635061.

The product of its digits is 113400, while the sum is 41.

The square root of 53978315 is about 7346.9936028283. The cubic root of 53978315 is about 377.9257130315.

The spelling of 53978315 in words is "fifty-three million, nine hundred seventy-eight thousand, three hundred fifteen".