101321553 has 8 divisors (see below), whose sum is σ = 135205216. Its totient is φ = 67492800.

The previous prime is 101321551. The next prime is 101321569. The reversal of 101321553 is 355123101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101321553 - 2¹ = 101321551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101321551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9208 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (16900652).

Almost surely, 2^101321553 is an apocalyptic number.

It is an amenable number.

101321553 is a deficient number, since it is larger than the sum of its proper divisors (33883663).

101321553 is a wasteful number, since it uses less digits than its factorization.

101321553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27455.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 101321553 is about 10065.8607679622. The cubic root of 101321553 is about 466.1946435249.

Adding to 101321553 its reverse (355123101), we get a palindrome (456444654).

The spelling of 101321553 in words is "one hundred one million, three hundred twenty-one thousand, five hundred fifty-three".