172054019 has 2 divisors, whose sum is σ = 172054020. Its totient is φ = 172054018.

The previous prime is 172054009. The next prime is 172054027. The reversal of 172054019 is 910450271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172054019 is a prime.

It is a super-2 number, since 2×172054019² = 59205170908104722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_9611534 and since 172054019 and 9611534 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 172053982 and 172054000.

It is not a weakly prime, because it can be changed into another prime (172054009) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86027009 + 86027010.

It is an arithmetic number, because the mean of its divisors is an integer number (86027010).

Almost surely, 2^172054019 is an apocalyptic number.

172054019 is a deficient number, since it is larger than the sum of its proper divisors (1).

172054019 is an equidigital number, since it uses as much as digits as its factorization.

172054019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 172054019 is about 13116.9363419969. The cubic root of 172054019 is about 556.1879906637.

The spelling of 172054019 in words is "one hundred seventy-two million, fifty-four thousand, nineteen".