220528001 has 2 divisors, whose sum is σ = 220528002. Its totient is φ = 220528000.

The previous prime is 220527943. The next prime is 220528013. The reversal of 220528001 is 100825022.

220528001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182385025 + 38142976 = 13505^2 + 6176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220528001 is a prime.

It is a super-4 number, since 4×220528001⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (220528051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110264000 + 110264001.

It is an arithmetic number, because the mean of its divisors is an integer number (110264001).

Almost surely, 2^220528001 is an apocalyptic number.

It is an amenable number.

220528001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220528001 is an equidigital number, since it uses as much as digits as its factorization.

220528001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 220528001 is about 14850.1852177001. The cubic root of 220528001 is about 604.1636336104.

The spelling of 220528001 in words is "two hundred twenty million, five hundred twenty-eight thousand, one".