149501 has 4 divisors (see below), whose sum is σ = 163104. Its totient is φ = 135900.

The previous prime is 149497. The next prime is 149503. The reversal of 149501 is 105941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 105941 = 11 ⋅9631.

It is a cyclic number.

It is not a de Polignac number, because 149501 - 2² = 149497 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149503) 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, 6785 + ... + 6806.

It is an arithmetic number, because the mean of its divisors is an integer number (40776).

2¹⁴⁹⁵⁰¹ is an apocalyptic number.

149501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149501 is a deficient number, since it is larger than the sum of its proper divisors (13603).

149501 is a wasteful number, since it uses less digits than its factorization.

149501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 149501 is about 386.6535917330. The cubic root of 149501 is about 53.0739444900.

The spelling of 149501 in words is "one hundred forty-nine thousand, five hundred one".