53221047 has 8 divisors (see below), whose sum is σ = 77412480. Its totient is φ = 32255160.

The previous prime is 53221043. The next prime is 53221073. The reversal of 53221047 is 74012235.

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

It is not a de Polignac number, because 53221047 - 2² = 53221043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806347 + ... + 806412.

It is an arithmetic number, because the mean of its divisors is an integer number (9676560).

Almost surely, 2^53221047 is an apocalyptic number.

53221047 is a deficient number, since it is larger than the sum of its proper divisors (24191433).

53221047 is a wasteful number, since it uses less digits than its factorization.

53221047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612773.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 53221047 is about 7295.2756630576. The cubic root of 53221047 is about 376.1500622349.

The spelling of 53221047 in words is "fifty-three million, two hundred twenty-one thousand, forty-seven".