105137661 has 4 divisors (see below), whose sum is σ = 140183552. Its totient is φ = 70091772.

The previous prime is 105137603. The next prime is 105137663. The reversal of 105137661 is 166731501.

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 not a de Polignac number, because 105137661 - 2⁷ = 105137533 is a prime.

It is a super-2 number, since 2×105137661² = 22107855521101842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105137663) 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, 17522941 + ... + 17522946.

It is an arithmetic number, because the mean of its divisors is an integer number (35045888).

Almost surely, 2^105137661 is an apocalyptic number.

It is an amenable number.

105137661 is a deficient number, since it is larger than the sum of its proper divisors (35045891).

105137661 is an equidigital number, since it uses as much as digits as its factorization.

105137661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35045890.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 105137661 is about 10253.6657347507. The cubic root of 105137661 is about 471.9754802091.

The spelling of 105137661 in words is "one hundred five million, one hundred thirty-seven thousand, six hundred sixty-one".