53212087 has 4 divisors (see below), whose sum is σ = 55525680. Its totient is φ = 50898496.

The previous prime is 53212079. The next prime is 53212139. The reversal of 53212087 is 78021235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78021235 = 5 ⋅15604247.

It is a cyclic number.

It is not a de Polignac number, because 53212087 - 2³ = 53212079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53212007) 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, 1156762 + ... + 1156807.

It is an arithmetic number, because the mean of its divisors is an integer number (13881420).

Almost surely, 2^53212087 is an apocalyptic number.

53212087 is a deficient number, since it is larger than the sum of its proper divisors (2313593).

53212087 is a wasteful number, since it uses less digits than its factorization.

53212087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313592.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 53212087 is about 7294.6615411546. The cubic root of 53212087 is about 376.1289522048.

The spelling of 53212087 in words is "fifty-three million, two hundred twelve thousand, eighty-seven".