101051261 has 4 divisors (see below), whose sum is σ = 101250300. Its totient is φ = 100852224.

The previous prime is 101051243. The next prime is 101051273. The reversal of 101051261 is 162150101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74063236 + 26988025 = 8606^2 + 5195^2 .

It is a cyclic number.

It is not a de Polignac number, because 101051261 - 2¹⁰ = 101050237 is a prime.

It is a super-2 number, since 2×101051261² = 20422714699380242, 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 (101051201) 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, 98756 + ... + 99773.

It is an arithmetic number, because the mean of its divisors is an integer number (25312575).

Almost surely, 2^101051261 is an apocalyptic number.

It is an amenable number.

101051261 is a deficient number, since it is larger than the sum of its proper divisors (199039).

101051261 is an equidigital number, since it uses as much as digits as its factorization.

101051261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199038.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 101051261 is about 10052.4256276781. The cubic root of 101051261 is about 465.7797239121.

The spelling of 101051261 in words is "one hundred one million, fifty-one thousand, two hundred sixty-one".