148557091 has 2 divisors, whose sum is σ = 148557092. Its totient is φ = 148557090.

The previous prime is 148557089. The next prime is 148557119. The reversal of 148557091 is 190755841.

It is a happy number.

148557091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 148557091 - 2¹ = 148557089 is a prime.

Together with 148557089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (148557001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74278545 + 74278546.

It is an arithmetic number, because the mean of its divisors is an integer number (74278546).

Almost surely, 2^148557091 is an apocalyptic number.

148557091 is a deficient number, since it is larger than the sum of its proper divisors (1).

148557091 is an equidigital number, since it uses as much as digits as its factorization.

148557091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 148557091 is about 12188.3998539595. The cubic root of 148557091 is about 529.6201039331.

The spelling of 148557091 in words is "one hundred forty-eight million, five hundred fifty-seven thousand, ninety-one".