53221079 has 8 divisors (see below), whose sum is σ = 55427712. Its totient is φ = 51045120.

The previous prime is 53221073. The next prime is 53221081. The reversal of 53221079 is 97012235.

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

It is a cyclic number.

It is not a de Polignac number, because 53221079 - 2⁸ = 53220823 is a prime.

It is a super-4 number, since 4×53221079⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221073) 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, 4094 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (6928464).

Almost surely, 2^53221079 is an apocalyptic number.

53221079 is a deficient number, since it is larger than the sum of its proper divisors (2206633).

53221079 is a wasteful number, since it uses less digits than its factorization.

53221079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15337.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 53221079 is about 7295.2778562574. The cubic root of 53221079 is about 376.1501376236.

The spelling of 53221079 in words is "fifty-three million, two hundred twenty-one thousand, seventy-nine".