53487131 has 4 divisors (see below), whose sum is σ = 54088200. Its totient is φ = 52886064.

The previous prime is 53487103. The next prime is 53487139. The reversal of 53487131 is 13178435.

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 53487131 - 2¹⁰ = 53486107 is a prime.

It is a super-2 number, since 2×53487131² = 5721746365222322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53487139) 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, 300401 + ... + 300578.

It is an arithmetic number, because the mean of its divisors is an integer number (13522050).

Almost surely, 2^53487131 is an apocalyptic number.

53487131 is a deficient number, since it is larger than the sum of its proper divisors (601069).

53487131 is an equidigital number, since it uses as much as digits as its factorization.

53487131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601068.

The product of its digits is 10080, while the sum is 32.

The square root of 53487131 is about 7313.4896595264. The cubic root of 53487131 is about 376.7758871753.

The spelling of 53487131 in words is "fifty-three million, four hundred eighty-seven thousand, one hundred thirty-one".