101506261 has 4 divisors (see below), whose sum is σ = 102729312. Its totient is φ = 100283212.

The previous prime is 101506247. The next prime is 101506271. The reversal of 101506261 is 162605101.

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 not a de Polignac number, because 101506261 - 2¹⁷ = 101375189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101506241) 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, 611401 + ... + 611566.

It is an arithmetic number, because the mean of its divisors is an integer number (25682328).

Almost surely, 2^101506261 is an apocalyptic number.

It is an amenable number.

101506261 is a deficient number, since it is larger than the sum of its proper divisors (1223051).

101506261 is an equidigital number, since it uses as much as digits as its factorization.

101506261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223050.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 101506261 is about 10075.0315632260. The cubic root of 101506261 is about 466.4777606730.

The spelling of 101506261 in words is "one hundred one million, five hundred six thousand, two hundred sixty-one".