221277053 has 4 divisors (see below), whose sum is σ = 223019520. Its totient is φ = 219534588.

The previous prime is 221277037. The next prime is 221277107. The reversal of 221277053 is 350772122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221277053 - 2⁴ = 221277037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221271053) 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, 871043 + ... + 871296.

It is an arithmetic number, because the mean of its divisors is an integer number (55754880).

Almost surely, 2^221277053 is an apocalyptic number.

It is an amenable number.

221277053 is a deficient number, since it is larger than the sum of its proper divisors (1742467).

221277053 is a wasteful number, since it uses less digits than its factorization.

221277053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742466.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 221277053 is about 14875.3841294939. The cubic root of 221277053 is about 604.8469006772.

The spelling of 221277053 in words is "two hundred twenty-one million, two hundred seventy-seven thousand, fifty-three".