102051613 has 4 divisors (see below), whose sum is σ = 102415068. Its totient is φ = 101688160.

The previous prime is 102051569. The next prime is 102051623. The reversal of 102051613 is 316150201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316150201 = 4733 ⋅66797.

It can be written as a sum of positive squares in 2 ways, for example, as 33790969 + 68260644 = 5813^2 + 8262^2 .

It is a cyclic number.

It is not a de Polignac number, because 102051613 - 2¹³ = 102043421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102051623) 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, 181306 + ... + 181867.

It is an arithmetic number, because the mean of its divisors is an integer number (25603767).

Almost surely, 2^102051613 is an apocalyptic number.

It is an amenable number.

102051613 is a deficient number, since it is larger than the sum of its proper divisors (363455).

102051613 is an equidigital number, since it uses as much as digits as its factorization.

102051613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363454.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 102051613 is about 10102.0598394585. The cubic root of 102051613 is about 467.3116676848.

The spelling of 102051613 in words is "one hundred two million, fifty-one thousand, six hundred thirteen".