151623 has 12 divisors (see below), whose sum is σ = 232128. Its totient is φ = 95040.

The previous prime is 151609. The next prime is 151631. The reversal of 151623 is 326151.

It is not a de Polignac number, because 151623 - 2⁴ = 151607 is a prime.

151623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 151596 and 151605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151603) 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, 343 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (19344).

2¹⁵¹⁶²³ is an apocalyptic number.

151623 is a deficient number, since it is larger than the sum of its proper divisors (80505).

151623 is a wasteful number, since it uses less digits than its factorization.

151623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 1011 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 151623 is about 389.3879813245. The cubic root of 151623 is about 53.3238741905.

Adding to 151623 its reverse (326151), we get a palindrome (477774).

The spelling of 151623 in words is "one hundred fifty-one thousand, six hundred twenty-three".