53977191 has 8 divisors (see below), whose sum is σ = 73914864. Its totient is φ = 35012160.

The previous prime is 53977181. The next prime is 53977213. The reversal of 53977191 is 19177935.

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

It is not a de Polignac number, because 53977191 - 2⁹ = 53976679 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53977151) 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, 243030 + ... + 243251.

It is an arithmetic number, because the mean of its divisors is an integer number (9239358).

Almost surely, 2^53977191 is an apocalyptic number.

53977191 is a deficient number, since it is larger than the sum of its proper divisors (19937673).

53977191 is a wasteful number, since it uses less digits than its factorization.

53977191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486321.

The product of its digits is 59535, while the sum is 42.

The square root of 53977191 is about 7346.9171085565. The cubic root of 53977191 is about 377.9230898086.

The spelling of 53977191 in words is "fifty-three million, nine hundred seventy-seven thousand, one hundred ninety-one".