172055340 has 60 divisors (see below), whose sum is σ = 539749056. Its totient is φ = 45880992.

The previous prime is 172055339. The next prime is 172055353. The reversal of 172055340 is 43550271.

It is a happy number.

172055340 is a `hidden beast` number, since 1 + 72 + 0 + 553 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51484 + ... + 54723.

Almost surely, 2^172055340 is an apocalyptic number.

172055340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172055340 is an abundant number, since it is smaller than the sum of its proper divisors (367693716).

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

172055340 is a wasteful number, since it uses less digits than its factorization.

172055340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106228 (or 106217 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 172055340 is about 13116.9866966465. The cubic root of 172055340 is about 556.1894140974.

The spelling of 172055340 in words is "one hundred seventy-two million, fifty-five thousand, three hundred forty".