102782051 has 4 divisors (see below), whose sum is σ = 108828072. Its totient is φ = 96736032.

The previous prime is 102782047. The next prime is 102782063. The reversal of 102782051 is 150287201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150287201 = 1759 ⋅85439.

It is a cyclic number.

It is not a de Polignac number, because 102782051 - 2² = 102782047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102782051.

It is not an unprimeable number, because it can be changed into a prime (102782551) 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, 3022985 + ... + 3023018.

It is an arithmetic number, because the mean of its divisors is an integer number (27207018).

Almost surely, 2^102782051 is an apocalyptic number.

102782051 is a deficient number, since it is larger than the sum of its proper divisors (6046021).

102782051 is an equidigital number, since it uses as much as digits as its factorization.

102782051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046020.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 102782051 is about 10138.1483023282. The cubic root of 102782051 is about 468.4239513724.

The spelling of 102782051 in words is "one hundred two million, seven hundred eighty-two thousand, fifty-one".