53211685 has 8 divisors (see below), whose sum is σ = 67214880. Its totient is φ = 40328784.

The previous prime is 53211667. The next prime is 53211701. The reversal of 53211685 is 58611235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53211685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279967 + ... + 280156.

It is an arithmetic number, because the mean of its divisors is an integer number (8401860).

Almost surely, 2^53211685 is an apocalyptic number.

It is an amenable number.

53211685 is a deficient number, since it is larger than the sum of its proper divisors (14003195).

53211685 is a wasteful number, since it uses less digits than its factorization.

53211685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560147.

The product of its digits is 7200, while the sum is 31.

The square root of 53211685 is about 7294.6339867056. The cubic root of 53211685 is about 376.1280050251.

The spelling of 53211685 in words is "fifty-three million, two hundred eleven thousand, six hundred eighty-five".