165010555 has 4 divisors (see below), whose sum is σ = 198012672. Its totient is φ = 132008440.

The previous prime is 165010543. The next prime is 165010567. The reversal of 165010555 is 555010561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555010561 = 7 ⋅79287223.

It is an interprime number because it is at equal distance from previous prime (165010543) and next prime (165010567).

It is not a de Polignac number, because 165010555 - 2⁵ = 165010523 is a prime.

It is a super-2 number, since 2×165010555² = 54456966522816050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16501051 + ... + 16501060.

It is an arithmetic number, because the mean of its divisors is an integer number (49503168).

Almost surely, 2^165010555 is an apocalyptic number.

165010555 is a deficient number, since it is larger than the sum of its proper divisors (33002117).

165010555 is an equidigital number, since it uses as much as digits as its factorization.

165010555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33002116.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 165010555 is about 12845.6434249126. The cubic root of 165010555 is about 548.4923503743.

The spelling of 165010555 in words is "one hundred sixty-five million, ten thousand, five hundred fifty-five".