53071487 has 4 divisors (see below), whose sum is σ = 60653136. Its totient is φ = 45489840.

The previous prime is 53071483. The next prime is 53071493. The reversal of 53071487 is 78417035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78417035 = 5 ⋅15683407.

It is a cyclic number.

It is not a de Polignac number, because 53071487 - 2² = 53071483 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 (53071481) 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, 3790814 + ... + 3790827.

It is an arithmetic number, because the mean of its divisors is an integer number (15163284).

Almost surely, 2^53071487 is an apocalyptic number.

53071487 is a deficient number, since it is larger than the sum of its proper divisors (7581649).

53071487 is an equidigital number, since it uses as much as digits as its factorization.

53071487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581648.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 53071487 is about 7285.0179821329. The cubic root of 53071487 is about 375.7973835730.

The spelling of 53071487 in words is "fifty-three million, seventy-one thousand, four hundred eighty-seven".