106401521 has 8 divisors (see below), whose sum is σ = 112752000. Its totient is φ = 100061248.

The previous prime is 106401469. The next prime is 106401527. The reversal of 106401521 is 125104601.

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

It is a cyclic number.

It is not a de Polignac number, because 106401521 - 2⁶ = 106401457 is a prime.

It is a super-2 number, since 2×106401521² = 22642567342226882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 106401493 and 106401502.

It is not an unprimeable number, because it can be changed into a prime (106401527) 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, 33980 + ... + 36978.

It is an arithmetic number, because the mean of its divisors is an integer number (14094000).

Almost surely, 2^106401521 is an apocalyptic number.

It is an amenable number.

106401521 is a deficient number, since it is larger than the sum of its proper divisors (6350479).

106401521 is a wasteful number, since it uses less digits than its factorization.

106401521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 106401521 is about 10315.1112936313. Note that the first 3 decimals coincide. The cubic root of 106401521 is about 473.8591583665.

The spelling of 106401521 in words is "one hundred six million, four hundred one thousand, five hundred twenty-one".