172214737 has 4 divisors (see below), whose sum is σ = 172242160. Its totient is φ = 172187316.

The previous prime is 172214717. The next prime is 172214741. The reversal of 172214737 is 737412271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 172214737 - 2¹⁵ = 172181969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172214717) 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 3 ways as a sum of consecutive naturals, for example, 898 + ... + 18580.

It is an arithmetic number, because the mean of its divisors is an integer number (43060540).

Almost surely, 2^172214737 is an apocalyptic number.

It is an amenable number.

172214737 is a deficient number, since it is larger than the sum of its proper divisors (27423).

172214737 is an equidigital number, since it uses as much as digits as its factorization.

172214737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27422.

The product of its digits is 16464, while the sum is 34.

The square root of 172214737 is about 13123.0612663357. The cubic root of 172214737 is about 556.3611176912.

The spelling of 172214737 in words is "one hundred seventy-two million, two hundred fourteen thousand, seven hundred thirty-seven".