148634521 has 4 divisors (see below), whose sum is σ = 169868032. Its totient is φ = 127401012.

The previous prime is 148634501. The next prime is 148634543. The reversal of 148634521 is 125436841.

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 148634521 - 2⁵ = 148634489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148634501) 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, 10616745 + ... + 10616758.

It is an arithmetic number, because the mean of its divisors is an integer number (42467008).

Almost surely, 2^148634521 is an apocalyptic number.

It is an amenable number.

148634521 is a deficient number, since it is larger than the sum of its proper divisors (21233511).

148634521 is an equidigital number, since it uses as much as digits as its factorization.

148634521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21233510.

The product of its digits is 23040, while the sum is 34.

The square root of 148634521 is about 12191.5758210331. The cubic root of 148634521 is about 529.7121030465.

The spelling of 148634521 in words is "one hundred forty-eight million, six hundred thirty-four thousand, five hundred twenty-one".