165001455 has 40 divisors (see below), whose sum is σ = 301400352. Its totient is φ = 86329152.

The previous prime is 165001451. The next prime is 165001457. The reversal of 165001455 is 554100561.

It is a happy number.

165001455 is a `hidden beast` number, since 1 + 650 + 0 + 1 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 165001455 - 2² = 165001451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165001451) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17622 + ... + 25308.

Almost surely, 2^165001455 is an apocalyptic number.

165001455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165001455 is a deficient number, since it is larger than the sum of its proper divisors (136398897).

165001455 is an equidigital number, since it uses as much as digits as its factorization.

165001455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757 (or 7748 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 165001455 is about 12845.2892143385. The cubic root of 165001455 is about 548.4822674392.

It can be divided in two parts, 16500 and 1455, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 165001455 in words is "one hundred sixty-five million, one thousand, four hundred fifty-five".