54661505 has 4 divisors (see below), whose sum is σ = 65593812. Its totient is φ = 43729200.

The previous prime is 54661489. The next prime is 54661507. The reversal of 54661505 is 50516645.

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 17707264 + 36954241 = 4208^2 + 6079^2 .

It is not a de Polignac number, because 54661505 - 2⁴ = 54661489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54661507) 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, 5466146 + ... + 5466155.

It is an arithmetic number, because the mean of its divisors is an integer number (16398453).

Almost surely, 2^54661505 is an apocalyptic number.

It is an amenable number.

54661505 is a deficient number, since it is larger than the sum of its proper divisors (10932307).

54661505 is a wasteful number, since it uses less digits than its factorization.

54661505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932306.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 54661505 is about 7393.3419371756. The cubic root of 54661505 is about 379.5134701391.

The spelling of 54661505 in words is "fifty-four million, six hundred sixty-one thousand, five hundred five".