148353591 has 4 divisors (see below), whose sum is σ = 197804792. Its totient is φ = 98902392.

The previous prime is 148353581. The next prime is 148353599. The reversal of 148353591 is 195353841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195353841 = 3 ⋅65117947.

It is not a de Polignac number, because 148353591 - 2¹¹ = 148351543 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 (148353599) 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, 24725596 + ... + 24725601.

It is an arithmetic number, because the mean of its divisors is an integer number (49451198).

Almost surely, 2^148353591 is an apocalyptic number.

148353591 is a deficient number, since it is larger than the sum of its proper divisors (49451201).

148353591 is an equidigital number, since it uses as much as digits as its factorization.

148353591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49451200.

The product of its digits is 64800, while the sum is 39.

The square root of 148353591 is about 12180.0488915275. The cubic root of 148353591 is about 529.3781611649.

The spelling of 148353591 in words is "one hundred forty-eight million, three hundred fifty-three thousand, five hundred ninety-one".