102051655 has 4 divisors (see below), whose sum is σ = 122461992. Its totient is φ = 81641320.

The previous prime is 102051643. The next prime is 102051671. The reversal of 102051655 is 556150201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102051655 - 2⁵ = 102051623 is a prime.

It is a Duffinian number.

It is a congruent 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, 10205161 + ... + 10205170.

It is an arithmetic number, because the mean of its divisors is an integer number (30615498).

Almost surely, 2^102051655 is an apocalyptic number.

102051655 is a deficient number, since it is larger than the sum of its proper divisors (20410337).

102051655 is an equidigital number, since it uses as much as digits as its factorization.

102051655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410336.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 102051655 is about 10102.0619182422. The cubic root of 102051655 is about 467.3117317932.

The spelling of 102051655 in words is "one hundred two million, fifty-one thousand, six hundred fifty-five".