53242287 has 32 divisors (see below), whose sum is σ = 83558400. Its totient is φ = 29528928.

The previous prime is 53242253. The next prime is 53242291. The reversal of 53242287 is 78224235.

It is not a de Polignac number, because 53242287 - 2¹⁴ = 53225903 is a prime.

It is a super-2 number, since 2×53242287² = 5669482249980738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53242207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110914 + ... + 111392.

It is an arithmetic number, because the mean of its divisors is an integer number (2611200).

Almost surely, 2^53242287 is an apocalyptic number.

53242287 is a deficient number, since it is larger than the sum of its proper divisors (30316113).

53242287 is a wasteful number, since it uses less digits than its factorization.

53242287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its digits is 26880, while the sum is 33.

The square root of 53242287 is about 7296.7312544728. The cubic root of 53242287 is about 376.2000948515.

It can be divided in two parts, 5324228 and 7, that added together give a palindrome (5324235).

The spelling of 53242287 in words is "fifty-three million, two hundred forty-two thousand, two hundred eighty-seven".