102155233 has 4 divisors (see below), whose sum is σ = 102175920. Its totient is φ = 102134548.

The previous prime is 102155219. The next prime is 102155237. The reversal of 102155233 is 332551201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332551201 = 677 ⋅491213.

It is a cyclic number.

It is not a de Polignac number, because 102155233 - 2⁹ = 102154721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102155237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (25543980).

Almost surely, 2^102155233 is an apocalyptic number.

It is an amenable number.

102155233 is a deficient number, since it is larger than the sum of its proper divisors (20687).

102155233 is an equidigital number, since it uses as much as digits as its factorization.

102155233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20686.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 102155233 is about 10107.1871952586. The cubic root of 102155233 is about 467.4697787093.

The spelling of 102155233 in words is "one hundred two million, one hundred fifty-five thousand, two hundred thirty-three".