102649051 has 2 divisors, whose sum is σ = 102649052. Its totient is φ = 102649050.

The previous prime is 102649049. The next prime is 102649061. The reversal of 102649051 is 150946201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102649051 - 2¹ = 102649049 is a prime.

Together with 102649049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102649061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51324525 + 51324526.

It is an arithmetic number, because the mean of its divisors is an integer number (51324526).

Almost surely, 2^102649051 is an apocalyptic number.

102649051 is a deficient number, since it is larger than the sum of its proper divisors (1).

102649051 is an equidigital number, since it uses as much as digits as its factorization.

102649051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 102649051 is about 10131.5867957591. The cubic root of 102649051 is about 468.2218172563.

The spelling of 102649051 in words is "one hundred two million, six hundred forty-nine thousand, fifty-one".