249528401 has 2 divisors, whose sum is σ = 249528402. Its totient is φ = 249528400.

The previous prime is 249528371. The next prime is 249528413. The reversal of 249528401 is 104825942.

249528401 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., 166281025 + 83247376 = 12895^2 + 9124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249528401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249528451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124764200 + 124764201.

It is an arithmetic number, because the mean of its divisors is an integer number (124764201).

Almost surely, 2^249528401 is an apocalyptic number.

It is an amenable number.

249528401 is a deficient number, since it is larger than the sum of its proper divisors (1).

249528401 is an equidigital number, since it uses as much as digits as its factorization.

249528401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 249528401 is about 15796.4679912948. The cubic root of 249528401 is about 629.5641572693.

The spelling of 249528401 in words is "two hundred forty-nine million, five hundred twenty-eight thousand, four hundred one".