106455621 has 4 divisors (see below), whose sum is σ = 141940832. Its totient is φ = 70970412.

The previous prime is 106455617. The next prime is 106455677. The reversal of 106455621 is 126554601.

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: 126554601 = 3 ⋅42184867.

It is not a de Polignac number, because 106455621 - 2² = 106455617 is a prime.

It is a super-2 number, since 2×106455621² = 22665598484991282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106455221) 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, 17742601 + ... + 17742606.

It is an arithmetic number, because the mean of its divisors is an integer number (35485208).

Almost surely, 2^106455621 is an apocalyptic number.

It is an amenable number.

106455621 is a deficient number, since it is larger than the sum of its proper divisors (35485211).

106455621 is an equidigital number, since it uses as much as digits as its factorization.

106455621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35485210.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 106455621 is about 10317.7333266566. The cubic root of 106455621 is about 473.9394562063.

The spelling of 106455621 in words is "one hundred six million, four hundred fifty-five thousand, six hundred twenty-one".