172401315 has 32 divisors (see below), whose sum is σ = 288691776. Its totient is φ = 87759360.

The previous prime is 172401287. The next prime is 172401331. The reversal of 172401315 is 513104271.

It is not a de Polignac number, because 172401315 - 2⁸ = 172401059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26485 + ... + 32345.

It is an arithmetic number, because the mean of its divisors is an integer number (9021618).

Almost surely, 2^172401315 is an apocalyptic number.

172401315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172401315 is a deficient number, since it is larger than the sum of its proper divisors (116290461).

172401315 is a wasteful number, since it uses less digits than its factorization.

172401315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 172401315 is about 13130.1681253516. The cubic root of 172401315 is about 556.5619663167.

Adding to 172401315 its reverse (513104271), we get a palindrome (685505586).

The spelling of 172401315 in words is "one hundred seventy-two million, four hundred one thousand, three hundred fifteen".