53851487 has 4 divisors (see below), whose sum is σ = 56192880. Its totient is φ = 51510096.

The previous prime is 53851481. The next prime is 53851489. The reversal of 53851487 is 78415835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78415835 = 5 ⋅15683167.

It is a cyclic number.

It is not a de Polignac number, because 53851487 - 2¹⁰ = 53850463 is a prime.

It is a super-2 number, since 2×53851487² = 5799965304222338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53851481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170662 + ... + 1170707.

It is an arithmetic number, because the mean of its divisors is an integer number (14048220).

Almost surely, 2^53851487 is an apocalyptic number.

53851487 is a deficient number, since it is larger than the sum of its proper divisors (2341393).

53851487 is a wasteful number, since it uses less digits than its factorization.

53851487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341392.

The product of its digits is 134400, while the sum is 41.

The square root of 53851487 is about 7338.3572412359. The cubic root of 53851487 is about 377.6294882014.

It can be divided in two parts, 538 and 51487, that added together give a palindrome (52025).

The spelling of 53851487 in words is "fifty-three million, eight hundred fifty-one thousand, four hundred eighty-seven".