151749 has 12 divisors (see below), whose sum is σ = 236236. Its totient is φ = 93312.

The previous prime is 151733. The next prime is 151769. The reversal of 151749 is 947151.

151749 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 101124 + 50625 = 318^2 + 225^2 .

It is not a de Polignac number, because 151749 - 2⁴ = 151733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532 + ... + 765.

2¹⁵¹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

151749 is a deficient number, since it is larger than the sum of its proper divisors (84487).

151749 is a wasteful number, since it uses less digits than its factorization.

151749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1313 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 151749 is about 389.5497400846. The cubic root of 151749 is about 53.3386409648.

It can be divided in two parts, 151 and 749, that added together give a square (900 = 30²).

The spelling of 151749 in words is "one hundred fifty-one thousand, seven hundred forty-nine".