106451509 has 4 divisors (see below), whose sum is σ = 112054240. Its totient is φ = 100848780.

The previous prime is 106451497. The next prime is 106451533. The reversal of 106451509 is 905154601.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106451509 is a prime.

It is a super-2 number, since 2×106451509² = 22663847536754162, 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 (106451549) 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, 2801337 + ... + 2801374.

It is an arithmetic number, because the mean of its divisors is an integer number (28013560).

Almost surely, 2^106451509 is an apocalyptic number.

106451509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

106451509 is a deficient number, since it is larger than the sum of its proper divisors (5602731).

106451509 is an equidigital number, since it uses as much as digits as its factorization.

106451509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5602730.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 106451509 is about 10317.5340561590. The cubic root of 106451509 is about 473.9333539322.

The spelling of 106451509 in words is "one hundred six million, four hundred fifty-one thousand, five hundred nine".