100640552 has 8 divisors (see below), whose sum is σ = 188701050. Its totient is φ = 50320272.

The previous prime is 100640543. The next prime is 100640557. The reversal of 100640552 is 255046001.

It can be written as a sum of positive squares in only one way, i.e., 98287396 + 2353156 = 9914^2 + 1534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (100640557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6290027 + ... + 6290042.

Almost surely, 2^100640552 is an apocalyptic number.

It is an amenable number.

100640552 is a deficient number, since it is larger than the sum of its proper divisors (88060498).

100640552 is a wasteful number, since it uses less digits than its factorization.

100640552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12580075 (or 12580071 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 100640552 is about 10031.9764752515. The cubic root of 100640552 is about 465.1478344456.

Adding to 100640552 its reverse (255046001), we get a palindrome (355686553).

The spelling of 100640552 in words is "one hundred million, six hundred forty thousand, five hundred fifty-two".