172151542 has 8 divisors (see below), whose sum is σ = 262081656. Its totient is φ = 84790992.

The previous prime is 172151521. The next prime is 172151549. The reversal of 172151542 is 245151271.

172151542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 172151542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172151549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642223 + ... + 642490.

It is an arithmetic number, because the mean of its divisors is an integer number (32760207).

Almost surely, 2^172151542 is an apocalyptic number.

172151542 is a deficient number, since it is larger than the sum of its proper divisors (89930114).

172151542 is a wasteful number, since it uses less digits than its factorization.

172151542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284782.

The product of its digits is 2800, while the sum is 28.

The square root of 172151542 is about 13120.6532611757. The cubic root of 172151542 is about 556.2930562640.

The spelling of 172151542 in words is "one hundred seventy-two million, one hundred fifty-one thousand, five hundred forty-two".