148881533 has 4 divisors (see below), whose sum is σ = 150978528. Its totient is φ = 146784540.

The previous prime is 148881527. The next prime is 148881569. The reversal of 148881533 is 335188841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148881533 - 2²² = 144687229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148881503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048391 + ... + 1048532.

It is an arithmetic number, because the mean of its divisors is an integer number (37744632).

Almost surely, 2^148881533 is an apocalyptic number.

It is an amenable number.

148881533 is a deficient number, since it is larger than the sum of its proper divisors (2096995).

148881533 is an equidigital number, since it uses as much as digits as its factorization.

148881533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096994.

The product of its digits is 92160, while the sum is 41.

The square root of 148881533 is about 12201.7020534022. The cubic root of 148881533 is about 530.0053790839.

The spelling of 148881533 in words is "one hundred forty-eight million, eight hundred eighty-one thousand, five hundred thirty-three".