102669155 has 4 divisors (see below), whose sum is σ = 123202992. Its totient is φ = 82135320.

The previous prime is 102669143. The next prime is 102669157. The reversal of 102669155 is 551966201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551966201 = 4079 ⋅135319.

It is not a de Polignac number, because 102669155 - 2¹⁰ = 102668131 is a prime.

It is a super-4 number, since 4×102669155⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102669157) 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, 10266911 + ... + 10266920.

It is an arithmetic number, because the mean of its divisors is an integer number (30800748).

Almost surely, 2^102669155 is an apocalyptic number.

102669155 is a deficient number, since it is larger than the sum of its proper divisors (20533837).

102669155 is an equidigital number, since it uses as much as digits as its factorization.

102669155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20533836.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 102669155 is about 10132.5788918715. The cubic root of 102669155 is about 468.2523826207.

The spelling of 102669155 in words is "one hundred two million, six hundred sixty-nine thousand, one hundred fifty-five".