172413623 has 2 divisors, whose sum is σ = 172413624. Its totient is φ = 172413622.

The previous prime is 172413601. The next prime is 172413641. The reversal of 172413623 is 326314271.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172413623 - 2¹² = 172409527 is a prime.

It is a super-2 number, since 2×172413623² = 59452914791972258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172413653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86206811 + 86206812.

It is an arithmetic number, because the mean of its divisors is an integer number (86206812).

Almost surely, 2^172413623 is an apocalyptic number.

172413623 is a deficient number, since it is larger than the sum of its proper divisors (1).

172413623 is an equidigital number, since it uses as much as digits as its factorization.

172413623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 172413623 is about 13130.6368086243. The cubic root of 172413623 is about 556.5752106118.

Adding to 172413623 its reverse (326314271), we get a palindrome (498727894).

The spelling of 172413623 in words is "one hundred seventy-two million, four hundred thirteen thousand, six hundred twenty-three".