154138545 has 96 divisors (see below), whose sum is σ = 318689280. Its totient is φ = 70683840.

The previous prime is 154138499. The next prime is 154138547. The reversal of 154138545 is 545831451.

It is not a de Polignac number, because 154138545 - 2¹⁶ = 154073009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154138547) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 253632 + ... + 254238.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^154138545 is an apocalyptic number.

154138545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154138545 is an abundant number, since it is smaller than the sum of its proper divisors (164550735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154138545 is a wasteful number, since it uses less digits than its factorization.

154138545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 645 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 154138545 is about 12415.2545282004. The cubic root of 154138545 is about 536.1715323594.

Adding to 154138545 its reverse (545831451), we get a palindrome (699969996).

The spelling of 154138545 in words is "one hundred fifty-four million, one hundred thirty-eight thousand, five hundred forty-five".