148529569 has 2 divisors, whose sum is σ = 148529570. Its totient is φ = 148529568.

The previous prime is 148529567. The next prime is 148529599. The reversal of 148529569 is 965925841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85803169 + 62726400 = 9263^2 + 7920^2 .

It is an emirp because it is prime and its reverse (965925841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148529569 - 2¹ = 148529567 is a prime.

It is a super-2 number, since 2×148529569² = 44122065734651522, which contains 22 as substring.

Together with 148529567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (148529567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74264784 + 74264785.

It is an arithmetic number, because the mean of its divisors is an integer number (74264785).

Almost surely, 2^148529569 is an apocalyptic number.

It is an amenable number.

148529569 is a deficient number, since it is larger than the sum of its proper divisors (1).

148529569 is an equidigital number, since it uses as much as digits as its factorization.

148529569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 49.

The square root of 148529569 is about 12187.2707773316. The cubic root of 148529569 is about 529.5873957340.

The spelling of 148529569 in words is "one hundred forty-eight million, five hundred twenty-nine thousand, five hundred sixty-nine".