101408513 has 4 divisors (see below), whose sum is σ = 101478468. Its totient is φ = 101338560.

The previous prime is 101408509. The next prime is 101408537. The reversal of 101408513 is 315804101.

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 25230529 + 76177984 = 5023^2 + 8728^2 .

It is a cyclic number.

It is not a de Polignac number, because 101408513 - 2² = 101408509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101408543) 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, 32756 + ... + 35717.

It is an arithmetic number, because the mean of its divisors is an integer number (25369617).

Almost surely, 2^101408513 is an apocalyptic number.

It is an amenable number.

101408513 is a deficient number, since it is larger than the sum of its proper divisors (69955).

101408513 is an equidigital number, since it uses as much as digits as its factorization.

101408513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69954.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 101408513 is about 10070.1793926424. The cubic root of 101408513 is about 466.3279770968.

The spelling of 101408513 in words is "one hundred one million, four hundred eight thousand, five hundred thirteen".