54512405 has 4 divisors (see below), whose sum is σ = 65414892. Its totient is φ = 43609920.

The previous prime is 54512399. The next prime is 54512407. The reversal of 54512405 is 50421545.

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 10329796 + 44182609 = 3214^2 + 6647^2 .

It is not a de Polignac number, because 54512405 - 2⁴ = 54512389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54512407) 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, 5451236 + ... + 5451245.

It is an arithmetic number, because the mean of its divisors is an integer number (16353723).

Almost surely, 2^54512405 is an apocalyptic number.

It is an amenable number.

54512405 is a deficient number, since it is larger than the sum of its proper divisors (10902487).

54512405 is a wasteful number, since it uses less digits than its factorization.

54512405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10902486.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 54512405 is about 7383.2516549282. The cubic root of 54512405 is about 379.1680900536.

The spelling of 54512405 in words is "fifty-four million, five hundred twelve thousand, four hundred five".