100145761 has 4 divisors (see below), whose sum is σ = 100203712. Its totient is φ = 100087812.

The previous prime is 100145743. The next prime is 100145797. The reversal of 100145761 is 167541001.

It is a happy number.

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-100145761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100145711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26301 + ... + 29866.

It is an arithmetic number, because the mean of its divisors is an integer number (25050928).

Almost surely, 2^100145761 is an apocalyptic number.

It is an amenable number.

100145761 is a deficient number, since it is larger than the sum of its proper divisors (57951).

100145761 is an equidigital number, since it uses as much as digits as its factorization.

100145761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57950.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 100145761 is about 10007.2853961501. The cubic root of 100145761 is about 464.3842947528.

Adding to 100145761 its reverse (167541001), we get a palindrome (267686762).

The spelling of 100145761 in words is "one hundred million, one hundred forty-five thousand, seven hundred sixty-one".