154897855 has 32 divisors (see below), whose sum is σ = 220446720. Its totient is φ = 102245760.

The previous prime is 154897783. The next prime is 154897859. The reversal of 154897855 is 558798451.

It is not a de Polignac number, because 154897855 - 2¹³ = 154889663 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154897859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398001 + ... + 398389.

It is an arithmetic number, because the mean of its divisors is an integer number (6888960).

Almost surely, 2^154897855 is an apocalyptic number.

154897855 is a deficient number, since it is larger than the sum of its proper divisors (65548865).

154897855 is a wasteful number, since it uses less digits than its factorization.

154897855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 2016000, while the sum is 52.

The square root of 154897855 is about 12445.7966800041. The cubic root of 154897855 is about 537.0505115431.

The spelling of 154897855 in words is "one hundred fifty-four million, eight hundred ninety-seven thousand, eight hundred fifty-five".