149926253 has 4 divisors (see below), whose sum is σ = 151253148. Its totient is φ = 148599360.

The previous prime is 149926243. The next prime is 149926267. The reversal of 149926253 is 352629941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352629941 = 881 ⋅400261.

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 145853929 = 2018^2 + 12077^2 .

It is a cyclic number.

It is not a de Polignac number, because 149926253 - 2¹⁰ = 149925229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149926253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149926243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663278 + ... + 663503.

It is an arithmetic number, because the mean of its divisors is an integer number (37813287).

Almost surely, 2^149926253 is an apocalyptic number.

It is an amenable number.

149926253 is a deficient number, since it is larger than the sum of its proper divisors (1326895).

149926253 is a wasteful number, since it uses less digits than its factorization.

149926253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326894.

The product of its digits is 116640, while the sum is 41.

The square root of 149926253 is about 12244.4376351060. The cubic root of 149926253 is about 531.2421948934.

The spelling of 149926253 in words is "one hundred forty-nine million, nine hundred twenty-six thousand, two hundred fifty-three".