149775 has 12 divisors (see below), whose sum is σ = 247752. Its totient is φ = 79840.

The previous prime is 149771. The next prime is 149791. The reversal of 149775 is 577941.

It is not a de Polignac number, because 149775 - 2² = 149771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 924 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (20646).

2¹⁴⁹⁷⁷⁵ is an apocalyptic number.

149775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149775 is a deficient number, since it is larger than the sum of its proper divisors (97977).

149775 is a wasteful number, since it uses less digits than its factorization.

149775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010 (or 2005 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 149775 is about 387.0077518603. The cubic root of 149775 is about 53.1063487006.

The spelling of 149775 in words is "one hundred forty-nine thousand, seven hundred seventy-five".