101506649 has 2 divisors, whose sum is σ = 101506650. Its totient is φ = 101506648.

The previous prime is 101506637. The next prime is 101506663. The reversal of 101506649 is 946605101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101505625 + 1024 = 10075^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 101506649 - 2⁴ = 101506633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101506849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50753324 + 50753325.

It is an arithmetic number, because the mean of its divisors is an integer number (50753325).

Almost surely, 2^101506649 is an apocalyptic number.

It is an amenable number.

101506649 is a deficient number, since it is larger than the sum of its proper divisors (1).

101506649 is an equidigital number, since it uses as much as digits as its factorization.

101506649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 101506649 is about 10075.0508187304. The cubic root of 101506649 is about 466.4783550309.

The spelling of 101506649 in words is "one hundred one million, five hundred six thousand, six hundred forty-nine".