101621532 has 12 divisors (see below), whose sum is σ = 237116936. Its totient is φ = 33873840.

The previous prime is 101621497. The next prime is 101621537. The reversal of 101621532 is 235126101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 101621499 and 101621508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101621537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234219 + ... + 4234242.

Almost surely, 2^101621532 is an apocalyptic number.

101621532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101621532 is an abundant number, since it is smaller than the sum of its proper divisors (135495404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101621532 is a wasteful number, since it uses less digits than its factorization.

101621532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8468468 (or 8468466 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 101621532 is about 10080.7505672941. The cubic root of 101621532 is about 466.6542720064.

Adding to 101621532 its reverse (235126101), we get a palindrome (336747633).

The spelling of 101621532 in words is "one hundred one million, six hundred twenty-one thousand, five hundred thirty-two".