53221695 has 16 divisors (see below), whose sum is σ = 85304832. Its totient is φ = 28334880.

The previous prime is 53221691. The next prime is 53221697. The reversal of 53221695 is 59612235.

It is not a de Polignac number, because 53221695 - 2² = 53221691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6654 + ... + 12276.

It is an arithmetic number, because the mean of its divisors is an integer number (5331552).

Almost surely, 2^53221695 is an apocalyptic number.

53221695 is a deficient number, since it is larger than the sum of its proper divisors (32083137).

53221695 is a wasteful number, since it uses less digits than its factorization.

53221695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262.

The product of its digits is 16200, while the sum is 33.

The square root of 53221695 is about 7295.3200752263. The cubic root of 53221695 is about 376.1515888505.

The spelling of 53221695 in words is "fifty-three million, two hundred twenty-one thousand, six hundred ninety-five".