164397550 has 24 divisors (see below), whose sum is σ = 306565200. Its totient is φ = 65590080.

The previous prime is 164397547. The next prime is 164397551. The reversal of 164397550 is 55793461.

164397550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164397551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16431 + ... + 24469.

It is an arithmetic number, because the mean of its divisors is an integer number (12773550).

Almost surely, 2^164397550 is an apocalyptic number.

164397550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164397550 is a deficient number, since it is larger than the sum of its proper divisors (142167650).

164397550 is a wasteful number, since it uses less digits than its factorization.

164397550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 8455 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 164397550 is about 12821.7607995158. The cubic root of 164397550 is about 547.8123014093.

The spelling of 164397550 in words is "one hundred sixty-four million, three hundred ninety-seven thousand, five hundred fifty".