154040551 has 8 divisors (see below), whose sum is σ = 176204160. Its totient is φ = 131916408.

The previous prime is 154040539. The next prime is 154040597. The reversal of 154040551 is 155040451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154040551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154040501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (22025520).

Almost surely, 2^154040551 is an apocalyptic number.

154040551 is a deficient number, since it is larger than the sum of its proper divisors (22163609).

154040551 is a wasteful number, since it uses less digits than its factorization.

154040551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19733.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 154040551 is about 12411.3073848004. The cubic root of 154040551 is about 536.0578841011.

The spelling of 154040551 in words is "one hundred fifty-four million, forty thousand, five hundred fifty-one".