53478191 has 6 divisors (see below), whose sum is σ = 57908520. Its totient is φ = 49364328.

The previous prime is 53478163. The next prime is 53478199. The reversal of 53478191 is 19187435.

It is not a de Polignac number, because 53478191 - 2¹⁸ = 53216047 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 (53478199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158051 + ... + 158388.

It is an arithmetic number, because the mean of its divisors is an integer number (9651420).

Almost surely, 2^53478191 is an apocalyptic number.

53478191 is a deficient number, since it is larger than the sum of its proper divisors (4430329).

53478191 is a wasteful number, since it uses less digits than its factorization.

53478191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316465 (or 316452 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 53478191 is about 7312.8784346521. The cubic root of 53478191 is about 376.7548941872.

The spelling of 53478191 in words is "fifty-three million, four hundred seventy-eight thousand, one hundred ninety-one".