101535521 has 4 divisors (see below), whose sum is σ = 102016944. Its totient is φ = 101054100.

The previous prime is 101535457. The next prime is 101535541. The reversal of 101535521 is 125535101.

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 not a de Polignac number, because 101535521 - 2⁶ = 101535457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101535541) 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, 240395 + ... + 240816.

It is an arithmetic number, because the mean of its divisors is an integer number (25504236).

Almost surely, 2^101535521 is an apocalyptic number.

It is an amenable number.

101535521 is a deficient number, since it is larger than the sum of its proper divisors (481423).

101535521 is an equidigital number, since it uses as much as digits as its factorization.

101535521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481422.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 101535521 is about 10076.4835632278. The cubic root of 101535521 is about 466.5225783616.

The spelling of 101535521 in words is "one hundred one million, five hundred thirty-five thousand, five hundred twenty-one".