53249291 has 4 divisors (see below), whose sum is σ = 53297832. Its totient is φ = 53200752.

The previous prime is 53249281. The next prime is 53249293. The reversal of 53249291 is 19294235.

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 53249291 - 2²² = 49054987 is a prime.

It is a super-4 number, since 4×53249291⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53249293) 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 3 ways as a sum of consecutive naturals, for example, 22586 + ... + 24831.

It is an arithmetic number, because the mean of its divisors is an integer number (13324458).

Almost surely, 2^53249291 is an apocalyptic number.

53249291 is a deficient number, since it is larger than the sum of its proper divisors (48541).

53249291 is a wasteful number, since it uses less digits than its factorization.

53249291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48540.

The product of its digits is 19440, while the sum is 35.

The square root of 53249291 is about 7297.2111796220. The cubic root of 53249291 is about 376.2165904485.

The spelling of 53249291 in words is "fifty-three million, two hundred forty-nine thousand, two hundred ninety-one".