53977291 has 4 divisors (see below), whose sum is σ = 55125792. Its totient is φ = 52828792.

The previous prime is 53977247. The next prime is 53977321. The reversal of 53977291 is 19277935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53977291 - 2¹³ = 53969099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53977591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574180 + ... + 574273.

It is an arithmetic number, because the mean of its divisors is an integer number (13781448).

Almost surely, 2^53977291 is an apocalyptic number.

53977291 is a deficient number, since it is larger than the sum of its proper divisors (1148501).

53977291 is a wasteful number, since it uses less digits than its factorization.

53977291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148500.

The product of its digits is 119070, while the sum is 43.

The square root of 53977291 is about 7346.9239141290. The cubic root of 53977291 is about 377.9233231929.

The spelling of 53977291 in words is "fifty-three million, nine hundred seventy-seven thousand, two hundred ninety-one".