149075571 has 4 divisors (see below), whose sum is σ = 198767432. Its totient is φ = 99383712.

The previous prime is 149075527. The next prime is 149075579. The reversal of 149075571 is 175570941.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 149075571 - 2²⁵ = 115521139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149075579) 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, 24845926 + ... + 24845931.

It is an arithmetic number, because the mean of its divisors is an integer number (49691858).

Almost surely, 2^149075571 is an apocalyptic number.

149075571 is a deficient number, since it is larger than the sum of its proper divisors (49691861).

149075571 is an equidigital number, since it uses as much as digits as its factorization.

149075571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49691860.

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 149075571 is about 12209.6507321053. The cubic root of 149075571 is about 530.2355319582.

The spelling of 149075571 in words is "one hundred forty-nine million, seventy-five thousand, five hundred seventy-one".