106400051 has 4 divisors (see below), whose sum is σ = 107394552. Its totient is φ = 105405552.

The previous prime is 106399987. The next prime is 106400071. The reversal of 106400051 is 150004601.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 106400051 - 2⁶ = 106399987 is a prime.

It is a super-2 number, since 2×106400051² = 22641941705605202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106400071) 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, 497090 + ... + 497303.

It is an arithmetic number, because the mean of its divisors is an integer number (26848638).

Almost surely, 2^106400051 is an apocalyptic number.

106400051 is a deficient number, since it is larger than the sum of its proper divisors (994501).

106400051 is an equidigital number, since it uses as much as digits as its factorization.

106400051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994500.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 106400051 is about 10315.0400387008. The cubic root of 106400051 is about 473.8569761416.

Adding to 106400051 its reverse (150004601), we get a palindrome (256404652).

The spelling of 106400051 in words is "one hundred six million, four hundred thousand, fifty-one".