53729387 has 8 divisors (see below), whose sum is σ = 54603120. Its totient is φ = 52859520.

The previous prime is 53729383. The next prime is 53729399. The reversal of 53729387 is 78392735.

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 53729387 - 2² = 53729383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53729381) 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, 41039 + ... + 42327.

It is an arithmetic number, because the mean of its divisors is an integer number (6825390).

Almost surely, 2^53729387 is an apocalyptic number.

53729387 is a deficient number, since it is larger than the sum of its proper divisors (873733).

53729387 is a wasteful number, since it uses less digits than its factorization.

53729387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933.

The product of its digits is 317520, while the sum is 44.

The square root of 53729387 is about 7330.0332195700. The cubic root of 53729387 is about 377.3438665465.

The spelling of 53729387 in words is "fifty-three million, seven hundred twenty-nine thousand, three hundred eighty-seven".