148973515 has 4 divisors (see below), whose sum is σ = 178768224. Its totient is φ = 119178808.

The previous prime is 148973497. The next prime is 148973521. The reversal of 148973515 is 515379841.

148973515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515379841 = 71 ⋅7258871.

It is a cyclic number.

It is not a de Polignac number, because 148973515 - 2⁵ = 148973483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14897347 + ... + 14897356.

It is an arithmetic number, because the mean of its divisors is an integer number (44692056).

Almost surely, 2^148973515 is an apocalyptic number.

148973515 is a deficient number, since it is larger than the sum of its proper divisors (29794709).

148973515 is an equidigital number, since it uses as much as digits as its factorization.

148973515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29794708.

The product of its digits is 151200, while the sum is 43.

The square root of 148973515 is about 12205.4706996494. The cubic root of 148973515 is about 530.1145059345.

The spelling of 148973515 in words is "one hundred forty-eight million, nine hundred seventy-three thousand, five hundred fifteen".