106520551 has 2 divisors, whose sum is σ = 106520552. Its totient is φ = 106520550.

The previous prime is 106520549. The next prime is 106520581. The reversal of 106520551 is 155025601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106520551 - 2¹ = 106520549 is a prime.

It is a super-2 number, since 2×106520551² = 22693255570687202, which contains 22 as substring.

Together with 106520549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106520581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53260275 + 53260276.

It is an arithmetic number, because the mean of its divisors is an integer number (53260276).

Almost surely, 2^106520551 is an apocalyptic number.

106520551 is a deficient number, since it is larger than the sum of its proper divisors (1).

106520551 is an equidigital number, since it uses as much as digits as its factorization.

106520551 is an evil number, because the sum of its binary digits is even.

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

The square root of 106520551 is about 10320.8793714489. The cubic root of 106520551 is about 474.0357925460.

The spelling of 106520551 in words is "one hundred six million, five hundred twenty thousand, five hundred fifty-one".