101404505 has 16 divisors (see below), whose sum is σ = 124047504. Its totient is φ = 79564800.

The previous prime is 101404489. The next prime is 101404549. The reversal of 101404505 is 505404101.

101404505 = T₂₉₄ + T₂₉₅ + ... + T₈₅₈.

It can be written as a sum of positive squares in 8 ways, for example, as 1024144 + 100380361 = 1012^2 + 10019^2 .

It is not a de Polignac number, because 101404505 - 2⁴ = 101404489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56177 + ... + 57953.

It is an arithmetic number, because the mean of its divisors is an integer number (7752969).

Almost surely, 2^101404505 is an apocalyptic number.

It is an amenable number.

101404505 is a deficient number, since it is larger than the sum of its proper divisors (22642999).

101404505 is a wasteful number, since it uses less digits than its factorization.

101404505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 101404505 is about 10069.9803872699. The cubic root of 101404505 is about 466.3218334076.

Adding to 101404505 its reverse (505404101), we get a palindrome (606808606).

The spelling of 101404505 in words is "one hundred one million, four hundred four thousand, five hundred five".