28496551 has 2 divisors, whose sum is σ = 28496552. Its totient is φ = 28496550.

The previous prime is 28496543. The next prime is 28496557. The reversal of 28496551 is 15569482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28496551 - 2³ = 28496543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28496557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14248275 + 14248276.

It is an arithmetic number, because the mean of its divisors is an integer number (14248276).

Almost surely, 2^28496551 is an apocalyptic number.

28496551 is a deficient number, since it is larger than the sum of its proper divisors (1).

28496551 is an equidigital number, since it uses as much as digits as its factorization.

28496551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 28496551 is about 5338.2160877956. The cubic root of 28496551 is about 305.4434148830.

The spelling of 28496551 in words is "twenty-eight million, four hundred ninety-six thousand, five hundred fifty-one".