53978799 has 8 divisors (see below), whose sum is σ = 82253440. Its totient is φ = 30845016.

The previous prime is 53978797. The next prime is 53978809. The reversal of 53978799 is 99787935.

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

It is not a de Polignac number, because 53978799 - 2¹ = 53978797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53978797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285189 + ... + 1285230.

It is an arithmetic number, because the mean of its divisors is an integer number (10281680).

Almost surely, 2^53978799 is an apocalyptic number.

53978799 is a deficient number, since it is larger than the sum of its proper divisors (28274641).

53978799 is a wasteful number, since it uses less digits than its factorization.

53978799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570429.

The product of its digits is 4286520, while the sum is 57.

The square root of 53978799 is about 7347.0265413975. The cubic root of 53978799 is about 377.9268425931.

It can be divided in two parts, 5397 and 8799, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 53978799 in words is "fifty-three million, nine hundred seventy-eight thousand, seven hundred ninety-nine".