148261 has 4 divisors (see below), whose sum is σ = 149292. Its totient is φ = 147232.

The previous prime is 148249. The next prime is 148279. The reversal of 148261 is 162841.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 12100 = 369^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 148261 - 2⁵ = 148229 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 (148201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256 + ... + 601.

It is an arithmetic number, because the mean of its divisors is an integer number (37323).

2¹⁴⁸²⁶¹ is an apocalyptic number.

It is an amenable number.

148261 is a deficient number, since it is larger than the sum of its proper divisors (1031).

148261 is an equidigital number, since it uses as much as digits as its factorization.

148261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its digits is 384, while the sum is 22.

The square root of 148261 is about 385.0467504083. The cubic root of 148261 is about 52.9268005750.

The spelling of 148261 in words is "one hundred forty-eight thousand, two hundred sixty-one".