53142887 has 4 divisors (see below), whose sum is σ = 60734736. Its totient is φ = 45551040.

The previous prime is 53142863. The next prime is 53142899. The reversal of 53142887 is 78824135.

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 53142887 - 2⁶ = 53142823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53142887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53141887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3795914 + ... + 3795927.

It is an arithmetic number, because the mean of its divisors is an integer number (15183684).

Almost surely, 2^53142887 is an apocalyptic number.

53142887 is a deficient number, since it is larger than the sum of its proper divisors (7591849).

53142887 is an equidigital number, since it uses as much as digits as its factorization.

53142887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7591848.

The product of its digits is 53760, while the sum is 38.

The square root of 53142887 is about 7289.9168033661. The cubic root of 53142887 is about 375.9658350389.

The spelling of 53142887 in words is "fifty-three million, one hundred forty-two thousand, eight hundred eighty-seven".