28553611 has 2 divisors, whose sum is σ = 28553612. Its totient is φ = 28553610.

The previous prime is 28553597. The next prime is 28553617. The reversal of 28553611 is 11635582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28553611 - 2⁵ = 28553579 is a prime.

It is a super-2 number, since 2×28553611² = 1630617402278642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28553617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276805 + 14276806.

It is an arithmetic number, because the mean of its divisors is an integer number (14276806).

Almost surely, 2^28553611 is an apocalyptic number.

28553611 is a deficient number, since it is larger than the sum of its proper divisors (1).

28553611 is an equidigital number, since it uses as much as digits as its factorization.

28553611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 28553611 is about 5343.5578971318. The cubic root of 28553611 is about 305.6471469238.

The spelling of 28553611 in words is "twenty-eight million, five hundred fifty-three thousand, six hundred eleven".