172214097 has 64 divisors (see below), whose sum is σ = 278277120. Its totient is φ = 94321920.

The previous prime is 172214071. The next prime is 172214099. The reversal of 172214097 is 790412271.

It is not a de Polignac number, because 172214097 - 2⁶ = 172214033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (172214099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2918854 + ... + 2918912.

It is an arithmetic number, because the mean of its divisors is an integer number (4348080).

Almost surely, 2^172214097 is an apocalyptic number.

172214097 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

172214097 is a deficient number, since it is larger than the sum of its proper divisors (106063023).

172214097 is a wasteful number, since it uses less digits than its factorization.

172214097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 172214097 is about 13123.0368817587. The cubic root of 172214097 is about 556.3604284904.

The spelling of 172214097 in words is "one hundred seventy-two million, two hundred fourteen thousand, ninety-seven".