53457287 has 4 divisors (see below), whose sum is σ = 57569400. Its totient is φ = 49345176.

The previous prime is 53457281. The next prime is 53457343. The reversal of 53457287 is 78275435.

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 53457287 - 2¹⁴ = 53440903 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 (53457281) 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, 2056037 + ... + 2056062.

It is an arithmetic number, because the mean of its divisors is an integer number (14392350).

Almost surely, 2^53457287 is an apocalyptic number.

53457287 is a deficient number, since it is larger than the sum of its proper divisors (4112113).

53457287 is a wasteful number, since it uses less digits than its factorization.

53457287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112112.

The product of its digits is 235200, while the sum is 41.

The square root of 53457287 is about 7311.4490355880. The cubic root of 53457287 is about 376.7057980943.

The spelling of 53457287 in words is "fifty-three million, four hundred fifty-seven thousand, two hundred eighty-seven".