164857455 has 24 divisors (see below), whose sum is σ = 326575392. Its totient is φ = 75363264.

The previous prime is 164857439. The next prime is 164857463. The reversal of 164857455 is 554758461.

It is not a de Polignac number, because 164857455 - 2⁴ = 164857439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 164857455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261364 + ... + 261993.

It is an arithmetic number, because the mean of its divisors is an integer number (13607308).

Almost surely, 2^164857455 is an apocalyptic number.

164857455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164857455 is a deficient number, since it is larger than the sum of its proper divisors (161717937).

164857455 is a wasteful number, since it uses less digits than its factorization.

164857455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523375 (or 523372 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 164857455 is about 12839.6828231853. The cubic root of 164857455 is about 548.3226639297.

The spelling of 164857455 in words is "one hundred sixty-four million, eight hundred fifty-seven thousand, four hundred fifty-five".