149075251 has 4 divisors (see below), whose sum is σ = 160542592. Its totient is φ = 137607912.

The previous prime is 149075243. The next prime is 149075287. The reversal of 149075251 is 152570941.

149075251 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: 152570941 = 53 ⋅2878697.

It is not a de Polignac number, because 149075251 - 2³ = 149075243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149073251) 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, 5733651 + ... + 5733676.

It is an arithmetic number, because the mean of its divisors is an integer number (40135648).

Almost surely, 2^149075251 is an apocalyptic number.

149075251 is a deficient number, since it is larger than the sum of its proper divisors (11467341).

149075251 is a wasteful number, since it uses less digits than its factorization.

149075251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11467340.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 149075251 is about 12209.6376277103. The cubic root of 149075251 is about 530.2351525634.

The spelling of 149075251 in words is "one hundred forty-nine million, seventy-five thousand, two hundred fifty-one".