101051661 has 16 divisors (see below), whose sum is σ = 139442688. Its totient is φ = 65025600.

The previous prime is 101051653. The next prime is 101051663. The reversal of 101051661 is 166150101.

It is not a de Polignac number, because 101051661 - 2³ = 101051653 is a prime.

It is a super-2 number, since 2×101051661² = 20422876381717842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101051663) 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 15 ways as a sum of consecutive naturals, for example, 41695 + ... + 44051.

It is an arithmetic number, because the mean of its divisors is an integer number (8715168).

Almost surely, 2^101051661 is an apocalyptic number.

It is an amenable number.

101051661 is a deficient number, since it is larger than the sum of its proper divisors (38391027).

101051661 is a wasteful number, since it uses less digits than its factorization.

101051661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 101051661 is about 10052.4455233540. The cubic root of 101051661 is about 465.7803384901.

The spelling of 101051661 in words is "one hundred one million, fifty-one thousand, six hundred sixty-one".