106057621 has 2 divisors, whose sum is σ = 106057622. Its totient is φ = 106057620.

The previous prime is 106057597. The next prime is 106057657. The reversal of 106057621 is 126750601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 3845521 = 10110^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 106057621 - 2¹³ = 106049429 is a prime.

It is a super-2 number, since 2×106057621² = 22496437944359282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106057621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106057661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53028810 + 53028811.

It is an arithmetic number, because the mean of its divisors is an integer number (53028811).

Almost surely, 2^106057621 is an apocalyptic number.

It is an amenable number.

106057621 is a deficient number, since it is larger than the sum of its proper divisors (1).

106057621 is an equidigital number, since it uses as much as digits as its factorization.

106057621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 106057621 is about 10298.4280839359. The cubic root of 106057621 is about 473.3480878272.

The spelling of 106057621 in words is "one hundred six million, fifty-seven thousand, six hundred twenty-one".