148815261 has 12 divisors (see below), whose sum is σ = 245663392. Its totient is φ = 85037256.

The previous prime is 148815257. The next prime is 148815299. The reversal of 148815261 is 162518841.

It is not a de Polignac number, because 148815261 - 2² = 148815257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148815761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1181011 + ... + 1181136.

Almost surely, 2^148815261 is an apocalyptic number.

It is an amenable number.

148815261 is a deficient number, since it is larger than the sum of its proper divisors (96848131).

148815261 is a wasteful number, since it uses less digits than its factorization.

148815261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362160 (or 2362157 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 148815261 is about 12198.9860644236. The cubic root of 148815261 is about 529.9267265500.

It can be divided in two parts, 148 and 815261, that added together give a square (815409 = 903²).

The spelling of 148815261 in words is "one hundred forty-eight million, eight hundred fifteen thousand, two hundred sixty-one".