172054931 has 2 divisors, whose sum is σ = 172054932. Its totient is φ = 172054930.

The previous prime is 172054913. The next prime is 172054957. The reversal of 172054931 is 139450271.

Together with previous prime (172054913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (139450271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172054931 - 2¹⁸ = 171792787 is a prime.

It is a super-2 number, since 2×172054931² = 59205798562829522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172054231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86027465 + 86027466.

It is an arithmetic number, because the mean of its divisors is an integer number (86027466).

Almost surely, 2^172054931 is an apocalyptic number.

172054931 is a deficient number, since it is larger than the sum of its proper divisors (1).

172054931 is an equidigital number, since it uses as much as digits as its factorization.

172054931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 172054931 is about 13116.9711061662. The cubic root of 172054931 is about 556.1889733832.

The spelling of 172054931 in words is "one hundred seventy-two million, fifty-four thousand, nine hundred thirty-one".