172273315 has 4 divisors (see below), whose sum is σ = 206727984. Its totient is φ = 137818648.

The previous prime is 172273303. The next prime is 172273327. The reversal of 172273315 is 513372271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513372271 = 313 ⋅1640167.

It is an interprime number because it is at equal distance from previous prime (172273303) and next prime (172273327).

It is a cyclic number.

It is not a de Polignac number, because 172273315 - 2¹³ = 172265123 is a prime.

It is a super-2 number, since 2×172273315² = 59356190122178450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 17227327 + ... + 17227336.

It is an arithmetic number, because the mean of its divisors is an integer number (51681996).

Almost surely, 2^172273315 is an apocalyptic number.

172273315 is a deficient number, since it is larger than the sum of its proper divisors (34454669).

172273315 is an equidigital number, since it uses as much as digits as its factorization.

172273315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34454668.

The product of its digits is 8820, while the sum is 31.

The square root of 172273315 is about 13125.2929491117. The cubic root of 172273315 is about 556.4241917107.

The spelling of 172273315 in words is "one hundred seventy-two million, two hundred seventy-three thousand, three hundred fifteen".