154172856 has 32 divisors (see below), whose sum is σ = 386265600. Its totient is φ = 51279840.

The previous prime is 154172807. The next prime is 154172857. The reversal of 154172856 is 658271451.

154172856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154172857) 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, 4791 + ... + 18201.

It is an arithmetic number, because the mean of its divisors is an integer number (12070800).

Almost surely, 2^154172856 is an apocalyptic number.

It is an amenable number.

154172856 is an abundant number, since it is smaller than the sum of its proper divisors (232092744).

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

154172856 is a wasteful number, since it uses less digits than its factorization.

154172856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899 (or 13895 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 154172856 is about 12416.6362594706. The cubic root of 154172856 is about 536.2113130572.

The spelling of 154172856 in words is "one hundred fifty-four million, one hundred seventy-two thousand, eight hundred fifty-six".