106051621 has 4 divisors (see below), whose sum is σ = 114209452. Its totient is φ = 97893792.

The previous prime is 106051619. The next prime is 106051633. The reversal of 106051621 is 126150601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61308900 + 44742721 = 7830^2 + 6689^2 .

It is a cyclic number.

It is not a de Polignac number, because 106051621 - 2¹ = 106051619 is a prime.

It is a super-2 number, since 2×106051621² = 22493892633455282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106051592 and 106051601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106051691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4078896 + ... + 4078921.

It is an arithmetic number, because the mean of its divisors is an integer number (28552363).

Almost surely, 2^106051621 is an apocalyptic number.

It is an amenable number.

106051621 is a deficient number, since it is larger than the sum of its proper divisors (8157831).

106051621 is an equidigital number, since it uses as much as digits as its factorization.

106051621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157830.

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

The square root of 106051621 is about 10298.1367732226. The cubic root of 106051621 is about 473.3391614152.

The spelling of 106051621 in words is "one hundred six million, fifty-one thousand, six hundred twenty-one".