102010155 has 16 divisors (see below), whose sum is σ = 175771680. Its totient is φ = 50220288.

The previous prime is 102010123. The next prime is 102010187. The reversal of 102010155 is 551010201.

It is an interprime number because it is at equal distance from previous prime (102010123) and next prime (102010187).

It is not a de Polignac number, because 102010155 - 2⁵ = 102010123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261370 + ... + 261759.

It is an arithmetic number, because the mean of its divisors is an integer number (10985730).

Almost surely, 2^102010155 is an apocalyptic number.

102010155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102010155 is a deficient number, since it is larger than the sum of its proper divisors (73761525).

102010155 is a wasteful number, since it uses less digits than its factorization.

102010155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523150.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 102010155 is about 10100.0076732644. The cubic root of 102010155 is about 467.2483780394.

Adding to 102010155 its reverse (551010201), we get a palindrome (653020356).

It can be divided in two parts, 1020 and 10155, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 102010155 in words is "one hundred two million, ten thousand, one hundred fifty-five".