101690051 has 2 divisors, whose sum is σ = 101690052. Its totient is φ = 101690050.

The previous prime is 101690011. The next prime is 101690053. The reversal of 101690051 is 150096101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101690051 - 2¹⁴ = 101673667 is a prime.

Together with 101690053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 101689999 and 101690026.

It is not a weakly prime, because it can be changed into another prime (101690053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50845025 + 50845026.

It is an arithmetic number, because the mean of its divisors is an integer number (50845026).

Almost surely, 2^101690051 is an apocalyptic number.

101690051 is a deficient number, since it is larger than the sum of its proper divisors (1).

101690051 is an equidigital number, since it uses as much as digits as its factorization.

101690051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 101690051 is about 10084.1485014849. The cubic root of 101690051 is about 466.7591300345.

The spelling of 101690051 in words is "one hundred one million, six hundred ninety thousand, fifty-one".