53718387 has 16 divisors (see below), whose sum is σ = 73343232. Its totient is φ = 34963040.

The previous prime is 53718373. The next prime is 53718407. The reversal of 53718387 is 78381735.

It is a cyclic number.

It is not a de Polignac number, because 53718387 - 2¹⁸ = 53456243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53718367) 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, 21613 + ... + 23969.

It is an arithmetic number, because the mean of its divisors is an integer number (4583952).

Almost surely, 2^53718387 is an apocalyptic number.

53718387 is a deficient number, since it is larger than the sum of its proper divisors (19624845).

53718387 is a wasteful number, since it uses less digits than its factorization.

53718387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its digits is 141120, while the sum is 42.

The square root of 53718387 is about 7329.2828434984. The cubic root of 53718387 is about 377.3181136264.

The spelling of 53718387 in words is "fifty-three million, seven hundred eighteen thousand, three hundred eighty-seven".