171390054 has 16 divisors (see below), whose sum is σ = 373942080. Its totient is φ = 51936360.

The previous prime is 171390047. The next prime is 171390077. The reversal of 171390054 is 450093171.

171390054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×171390054² = 58749101220245832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298344 + ... + 1298475.

It is an arithmetic number, because the mean of its divisors is an integer number (23371380).

Almost surely, 2^171390054 is an apocalyptic number.

171390054 is an abundant number, since it is smaller than the sum of its proper divisors (202552026).

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

171390054 is a wasteful number, since it uses less digits than its factorization.

171390054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596835.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 171390054 is about 13091.6024229275. The cubic root of 171390054 is about 555.4716160085.

The spelling of 171390054 in words is "one hundred seventy-one million, three hundred ninety thousand, fifty-four".