252489091 has 2 divisors, whose sum is σ = 252489092. Its totient is φ = 252489090.

The previous prime is 252489067. The next prime is 252489113. The reversal of 252489091 is 190984252.

252489091 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252489091 is a prime.

It is a Chen prime.

It is equal to p_13807993 and since 252489091 and 13807993 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (252481091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126244545 + 126244546.

It is an arithmetic number, because the mean of its divisors is an integer number (126244546).

Almost surely, 2^252489091 is an apocalyptic number.

252489091 is a deficient number, since it is larger than the sum of its proper divisors (1).

252489091 is an equidigital number, since it uses as much as digits as its factorization.

252489091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 252489091 is about 15889.9053175279. The cubic root of 252489091 is about 632.0443298967.

The spelling of 252489091 in words is "two hundred fifty-two million, four hundred eighty-nine thousand, ninety-one".