264521149 has 2 divisors, whose sum is σ = 264521150. Its totient is φ = 264521148.

The previous prime is 264521143. The next prime is 264521189. The reversal of 264521149 is 941125462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186322500 + 78198649 = 13650^2 + 8843^2 .

It is a cyclic number.

It is not a de Polignac number, because 264521149 - 2³ = 264521141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264521141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132260574 + 132260575.

It is an arithmetic number, because the mean of its divisors is an integer number (132260575).

Almost surely, 2^264521149 is an apocalyptic number.

It is an amenable number.

264521149 is a deficient number, since it is larger than the sum of its proper divisors (1).

264521149 is an equidigital number, since it uses as much as digits as its factorization.

264521149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 264521149 is about 16264.1061543511. The cubic root of 264521149 is about 641.9287105878.

The spelling of 264521149 in words is "two hundred sixty-four million, five hundred twenty-one thousand, one hundred forty-nine".