171057490 has 16 divisors (see below), whose sum is σ = 308839680. Its totient is φ = 68214960.

The previous prime is 171057449. The next prime is 171057511. The reversal of 171057490 is 94750171.

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, 22530 + ... + 29149.

It is an arithmetic number, because the mean of its divisors is an integer number (19302480).

Almost surely, 2^171057490 is an apocalyptic number.

171057490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171057490 is a deficient number, since it is larger than the sum of its proper divisors (137782190).

171057490 is a wasteful number, since it uses less digits than its factorization.

171057490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52017.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 171057490 is about 13078.8948309863. The cubic root of 171057490 is about 555.1121056986.

The spelling of 171057490 in words is "one hundred seventy-one million, fifty-seven thousand, four hundred ninety".