148045531 has 4 divisors (see below), whose sum is σ = 148528072. Its totient is φ = 147562992.

The previous prime is 148045501. The next prime is 148045559. The reversal of 148045531 is 135540841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135540841 = 61 ⋅2221981.

It is a cyclic number.

It is not a de Polignac number, because 148045531 - 2¹³ = 148037339 is a prime.

It is a super-2 number, since 2×148045531² = 43834958498143922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148045493 and 148045502.

It is not an unprimeable number, because it can be changed into a prime (148045501) 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, 240810 + ... + 241423.

It is an arithmetic number, because the mean of its divisors is an integer number (37132018).

Almost surely, 2^148045531 is an apocalyptic number.

148045531 is a deficient number, since it is larger than the sum of its proper divisors (482541).

148045531 is an equidigital number, since it uses as much as digits as its factorization.

148045531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482540.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 148045531 is about 12167.3962292678. The cubic root of 148045531 is about 529.0114848440.

The spelling of 148045531 in words is "one hundred forty-eight million, forty-five thousand, five hundred thirty-one".