101564530 has 16 divisors (see below), whose sum is σ = 183829464. Its totient is φ = 40400640.

The previous prime is 101564497. The next prime is 101564531. The reversal of 101564530 is 35465101.

It can be written as a sum of positive squares in 4 ways, for example, as 13786369 + 87778161 = 3713^2 + 9369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101564495 and 101564504.

It is not an unprimeable number, because it can be changed into a prime (101564531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26247 + ... + 29866.

Almost surely, 2^101564530 is an apocalyptic number.

101564530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101564530 is a deficient number, since it is larger than the sum of its proper divisors (82264934).

101564530 is a wasteful number, since it uses less digits than its factorization.

101564530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56301.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 101564530 is about 10077.9229010744. The cubic root of 101564530 is about 466.5670030933.

The spelling of 101564530 in words is "one hundred one million, five hundred sixty-four thousand, five hundred thirty".