900154 has 4 divisors (see below), whose sum is σ = 1350234. Its totient is φ = 450076.

The previous prime is 900149. The next prime is 900157. The reversal of 900154 is 451009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451009 = 13 ⋅34693.

It can be written as a sum of positive squares in only one way, i.e., 683929 + 216225 = 827^2 + 465^2 .

It is not an unprimeable number, because it can be changed into a prime (900157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225037 + ... + 225040.

2⁹⁰⁰¹⁵⁴ is an apocalyptic number.

900154 is a deficient number, since it is larger than the sum of its proper divisors (450080).

900154 is a wasteful number, since it uses less digits than its factorization.

900154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450079.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 900154 is about 948.7644597054. The cubic root of 900154 is about 96.5544450119.

The spelling of 900154 in words is "nine hundred thousand, one hundred fifty-four".