53115505 has 8 divisors (see below), whose sum is σ = 63816552. Its totient is φ = 42440448.

The previous prime is 53115481. The next prime is 53115511. The reversal of 53115505 is 50551135.

It can be written as a sum of positive squares in 4 ways, for example, as 8479744 + 44635761 = 2912^2 + 6681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53115505 - 2⁵ = 53115473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53115505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (7977069).

Almost surely, 2^53115505 is an apocalyptic number.

It is an amenable number.

53115505 is a deficient number, since it is larger than the sum of its proper divisors (10701047).

53115505 is a wasteful number, since it uses less digits than its factorization.

53115505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995.

The product of its (nonzero) digits is 1875, while the sum is 25.

The square root of 53115505 is about 7288.0384878237. The cubic root of 53115505 is about 375.9012515126.

It can be divided in two parts, 5311 and 5505, that added together give a square (10816 = 104²).

The spelling of 53115505 in words is "fifty-three million, one hundred fifteen thousand, five hundred five".