155102102 has 4 divisors (see below), whose sum is σ = 232653156. Its totient is φ = 77551050.

The previous prime is 155102093. The next prime is 155102117. The reversal of 155102102 is 201201551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201201551 = 761 ⋅264391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38775524 + ... + 38775527.

It is an arithmetic number, because the mean of its divisors is an integer number (58163289).

Almost surely, 2^155102102 is an apocalyptic number.

155102102 is a deficient number, since it is larger than the sum of its proper divisors (77551054).

155102102 is an equidigital number, since it uses as much as digits as its factorization.

155102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77551053.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 155102102 is about 12453.9994379316. Note that the first 3 decimals coincide. The cubic root of 155102102 is about 537.2864579535.

Adding to 155102102 its reverse (201201551), we get a palindrome (356303653).

The spelling of 155102102 in words is "one hundred fifty-five million, one hundred two thousand, one hundred two".