172851494 has 16 divisors (see below), whose sum is σ = 266653296. Its totient is φ = 83973600.

The previous prime is 172851409. The next prime is 172851499. The reversal of 172851494 is 494158271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172851499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79664 + ... + 81804.

It is an arithmetic number, because the mean of its divisors is an integer number (16665831).

Almost surely, 2^172851494 is an apocalyptic number.

172851494 is a deficient number, since it is larger than the sum of its proper divisors (93801802).

172851494 is a wasteful number, since it uses less digits than its factorization.

172851494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271.

The product of its digits is 80640, while the sum is 41.

The square root of 172851494 is about 13147.2998748793. The cubic root of 172851494 is about 557.0459818478.

The spelling of 172851494 in words is "one hundred seventy-two million, eight hundred fifty-one thousand, four hundred ninety-four".