106521601 has 4 divisors (see below), whose sum is σ = 106545600. Its totient is φ = 106497604.

The previous prime is 106521593. The next prime is 106521607. The reversal of 106521601 is 106125601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106125601 = 59 ⋅1798739.

It is a cyclic number.

It is not a de Polignac number, because 106521601 - 2³ = 106521593 is a prime.

It is a super-2 number, since 2×106521601² = 22693702959206402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106521607) 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, 3181 + ... + 14938.

It is an arithmetic number, because the mean of its divisors is an integer number (26636400).

Almost surely, 2^106521601 is an apocalyptic number.

It is an amenable number.

106521601 is a deficient number, since it is larger than the sum of its proper divisors (23999).

106521601 is an equidigital number, since it uses as much as digits as its factorization.

106521601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23998.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 106521601 is about 10320.9302390821. The cubic root of 106521601 is about 474.0373501045.

The spelling of 106521601 in words is "one hundred six million, five hundred twenty-one thousand, six hundred one".