53666545 has 16 divisors (see below), whose sum is σ = 68163840. Its totient is φ = 40449024.

The previous prime is 53666513. The next prime is 53666563. The reversal of 53666545 is 54566635.

It is a happy number.

It is not a de Polignac number, because 53666545 - 2⁵ = 53666513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53666498 and 53666507.

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, 16872 + ... + 19798.

It is an arithmetic number, because the mean of its divisors is an integer number (4260240).

Almost surely, 2^53666545 is an apocalyptic number.

It is an amenable number.

53666545 is a deficient number, since it is larger than the sum of its proper divisors (14497295).

53666545 is a wasteful number, since it uses less digits than its factorization.

53666545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144.

The product of its digits is 324000, while the sum is 40.

The square root of 53666545 is about 7325.7453545697. The cubic root of 53666545 is about 377.1966951037.

It can be divided in two parts, 5366 and 6545, that added together give a palindrome (11911).

The spelling of 53666545 in words is "fifty-three million, six hundred sixty-six thousand, five hundred forty-five".