55616545 has 8 divisors (see below), whose sum is σ = 67490280. Its totient is φ = 43992960.

The previous prime is 55616479. The next prime is 55616549. The reversal of 55616545 is 54561655.

It can be written as a sum of positive squares in 4 ways, for example, as 1682209 + 53934336 = 1297^2 + 7344^2 .

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

It is not a de Polignac number, because 55616545 - 2¹⁷ = 55485473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55616549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62046 + ... + 62935.

It is an arithmetic number, because the mean of its divisors is an integer number (8436285).

Almost surely, 2^55616545 is an apocalyptic number.

It is an amenable number.

55616545 is a deficient number, since it is larger than the sum of its proper divisors (11873735).

55616545 is a wasteful number, since it uses less digits than its factorization.

55616545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125075.

The product of its digits is 90000, while the sum is 37.

The square root of 55616545 is about 7457.6500990594. The cubic root of 55616545 is about 381.7109940909.

The spelling of 55616545 in words is "fifty-five million, six hundred sixteen thousand, five hundred forty-five".