154945 has 16 divisors (see below), whose sum is σ = 224640. Its totient is φ = 100224.

The previous prime is 154943. The next prime is 154981. The reversal of 154945 is 549451.

It is a cyclic number.

It is not a de Polignac number, because 154945 - 2¹ = 154943 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (154943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2¹⁵⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

154945 is a deficient number, since it is larger than the sum of its proper divisors (69695).

154945 is a wasteful number, since it uses less digits than its factorization.

154945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 3600, while the sum is 28.

The square root of 154945 is about 393.6305374333. The cubic root of 154945 is about 53.7104991915.

It can be divided in two parts, 154 and 945, that multiplied together give a triangular number (145530 = T₅₃₉).

The spelling of 154945 in words is "one hundred fifty-four thousand, nine hundred forty-five".